, colors = , mascot =

Bumblebee A bumblebee (or bumble bee, bumble-bee, or humble-bee) is any of over 250 species in the genus ''Bombus'', part of Apidae, one of the bee families. This genus is the only Extant taxon, extant group in the tribe Bombini, though a few extinct r ...

, battles =

Guadalcanal Guadalcanal (; indigenous name: ''Isatabu'') is the principal island in Guadalcanal Province of Solomon Islands, located in the south-western Pacific, northeast of Australia. It is the largest island in the Solomon Islands by area, and the se ...

, Bougainville, Cape Gloucester,

Los Negros Los Negros ('The Black Ones') was a criminal organization that was once the armed wing of the Sinaloa Cartel and after a switch of alliances, became the armed wing of the Sinaloa splinter gang, the Beltrán-Leyva Cartel. In 2010 it went indepe ...

Guam Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...

Peleliu Peleliu (or Beliliou) is an island in the island nation of Palau. Peleliu, along with two small islands to its northeast, forms one of the sixteen states of Palau. The island is notable as the location of the Battle of Peleliu in World War II. H ...

Tarawa Tarawa is an atoll and the capital of the Republic of Kiribati,Kiribati
''

Kwajalein Kwajalein Atoll (; Marshallese: ) is part of the Republic of the Marshall Islands (RMI). The southernmost and largest island in the atoll is named Kwajalein Island, which its majority English-speaking residents (about 1,000 mostly U.S. civilia ...

Saipan Saipan ( ch, Sa’ipan, cal, Seipél, formerly in es, Saipán, and in ja, 彩帆島, Saipan-tō) is the largest island of the Northern Mariana Islands, a Commonwealth (U.S. insular area), commonwealth of the United States in the western Pa ...

Tinian Tinian ( or ; old Japanese name: 天仁安島, ''Tenian-shima'') is one of the three principal islands of the Commonwealth of the Northern Mariana Islands. Together with uninhabited neighboring Aguiguan, it forms Tinian Municipality, one of the ...

Iwo Jima Iwo Jima (, also ), known in Japan as , is one of the Japanese Volcano Islands and lies south of the Bonin Islands. Together with other islands, they form the Ogasawara Archipelago. The highest point of Iwo Jima is Mount Suribachi at high. ...

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

Okinawa is a Prefectures of Japan, prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 Square kilometre, km2 (880 sq mi). ...

North Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...

Sicily (man) it, Siciliana (woman) , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = Ethnicity , demographics1_footnotes = , demographi ...

Anzio Anzio (, also , ) is a town and '' comune'' on the coast of the Lazio region of Italy, about south of Rome. Well known for its seaside harbour setting, it is a fishing port and a departure point for ferries and hydroplanes to the Pontine Isl ...

Normandy Normandy (; french: link=no, Normandie ; nrf, Normaundie, Nouormandie ; from Old French , plural of ''Normant'', originally from the word for "northman" in several Scandinavian languages) is a geographical and cultural region in Northwestern ...

Inchon landing The Battle of Incheon (), also spelled Battle of Inchon, was an amphibious invasion and a battle of the Korean War that resulted in a decisive victory and strategic reversal in favor of the United Nations Command (UN). The operation involved s ...

, Khe Sanh, Dong Xaoi, Chu Lai,

Con Thien Con Thien (Vietnamese: Cồn Tiên, meaning the "Hill of Angels") was a military base that started out as a U.S. Army Special Forces camp before transitioning to a United States Marine Corps combat base. It was located near the Vietnamese Dem ...

Desert Storm The Gulf War was a 1990–1991 armed campaign waged by a 35-country military coalition in response to the Iraqi invasion of Kuwait. Spearheaded by the United States, the coalition's efforts against Iraq were carried out in two key phases ...

Operation Iraqi Freedom {{Infobox military conflict , conflict = Iraq War {{Nobold, {{lang, ar, حرب العراق (Arabic) {{Nobold, {{lang, ku, شەڕی عێراق (Kurdish languages, Kurdish) , partof = the Iraq conflict (2003–present), I ...

, and

Enduring Freedom Operation Enduring Freedom (OEF) was the official name used synonymously by the U.S. government for both the War in Afghanistan (2001–2014) and the larger-scale Global War on Terrorism. On 7 October 2001, in response to the September 11 at ...

, anniversaries = 12/28/1941 formation requested
3/5/1942 formation authorized , website = https://www.necc.usff.navy.mil/seabees/ , notable_commanders = Admiral Ben Moreell The Seabee expression

United States Naval Construction Battalions, better known as the Navy Seabees, form the U.S. Naval Construction Force (NCF). The Seabee nickname is a

heterograph A homophone () is a word that is pronounced the same (to varying extent) as another word but differs in meaning. A ''homophone'' may also differ in spelling. The two words may be spelled the same, for example ''rose'' (flower) and ''rose'' (pa ...

of the initial letters "CB" from the words "Construction Battalion". Depending upon context, "Seabee" can refer to all enlisted personnel in the USN's occupational field 7 (OF-7), all personnel in the Naval Construction Force (NCF), or Construction Battalion. Seabees serve both in and outside the NCF. During World War II they were plank-holders of both the Naval Combat Demolition Units and the

Underwater Demolition Team Underwater Demolition Teams (UDT), or frogmen, were amphibious units created by the United States Navy during World War II with specialized non-tactical missions. They were predecessors of the navy's current SEAL teams. Their primary WWII f ...

s (UDTs). The men in the NCF considered these units to be "Seabee". In addition, Seabees served as elements of Cubs, Lions, Acorns and the

United States Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through c ...

. They also provided the manpower for the top secret CWS Flame Tank Group. Today the Seabees have many special task assignments starting with

Camp David Camp David is the country retreat for the president of the United States of America. It is located in the wooded hills of Catoctin Mountain Park, in Frederick County, Maryland, near the towns of Thurmont and Emmitsburg, about north-northwest ...

and the Naval Support Unit at the

Department of State The United States Department of State (DOS), or State Department, is an executive department of the U.S. federal government responsible for the country's foreign policy and relations. Equivalent to the ministry of foreign affairs of other na ...

. Seabees serve under both Commanders of the Naval Surface Forces Atlantic/Pacific fleets as well as on many base

Public Works Public works are a broad category of infrastructure projects, financed and constructed by the government, for recreational, employment, and health and safety uses in the greater community. They include public buildings ( municipal buildings, sc ...

and USN diving commands. Naval Construction Battalions were conceived of as replacements for civilian construction companies in combat zones after the attack on

Pearl Harbor Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the Naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the ...

. At the time civilian contractors had roughly 70,000 men working U.S.N. contracts overseas. International law made it illegal for civilian workers to resist an attack. Doing so would classify them as

guerrillas Guerrilla warfare is a form of irregular warfare in which small groups of combatants, such as paramilitary personnel, armed civilians, or irregulars, use military tactics including ambushes, sabotage, raids, petty warfare, hit-and-run tacti ...

and could lead to

summary execution A summary execution is an execution in which a person is accused of a crime and immediately killed without the benefit of a full and fair trial. Executions as the result of summary justice (such as a drumhead court-martial) are sometimes includ ...

. That is exactly what happened at Wake and would serve as the backstory to the World War II movie ''

The Fighting Seabees ''The Fighting Seabees'' is a 1944 war film, directed by Edward Ludwig and starring John Wayne and Susan Hayward. The supporting cast includes Dennis O'Keefe, William Frawley, Leonid Kinsky, Addison Richards and Grant Withers. ''The Fighting Seab ...

''. Adm. Moreell's concept model CB was a

USMC The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through co ...

trained military equivalent of those civilian companies: able to work anywhere, under any conditions or circumstances. They have a storied legacy of creative field ingenuity, stretching from

and

Iraq Iraq,; ku, عێراق, translit=Êraq officially the Republic of Iraq, '; ku, کۆماری عێراق, translit=Komarî Êraq is a country in Western Asia. It is bordered by Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq ...

and

Afghanistan Afghanistan, officially the Islamic Emirate of Afghanistan,; prs, امارت اسلامی افغانستان is a landlocked country located at the crossroads of Central Asia and South Asia. Referred to as the Heart of Asia, it is borde ...

. Adm. Ernest King wrote to the Seabees on their second anniversary, "Your ingenuity and fortitude have become a legend in the naval service." They were unique at conception and remain unchanged from Adm. Moreell's model today. In the October 1944 issue of '' Flying'', the Seabees are described as "a phenomenon of WWII".

Naval construction history

CB Conceptual Formation In the 1930s Bureau of Yards and Docks (BuDocks) began providing for "Navy Construction Battalions" (CB) in contingency war plans. In 1934, Capt. Carl Carlson's version of the CB was approved by

Chief of Naval Operations The chief of naval operations (CNO) is the professional head of the United States Navy. The position is a statutory office () held by an admiral who is a military adviser and deputy to the secretary of the Navy. In a separate capacity as a memb ...

In 1935, RADM. Norman Smith, head of BuDocks, selected Captain Walter Allen, War Plans Officer, to represent BuDocks on the War Plans Board. Capt. Allen presented the bureau's CB concept with the Board including it in the

Rainbow A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows c ...

war plans. The Seabees named their first training center for Capt. Allen. A criticism of the proposal was CBs would have a dual command; military control administrated by fleet line Officers while construction operations would be administrated by

Civil Engineer Corps The Civil Engineer Corps (CEC) is a staff corps of the United States Navy. CEC officers are professional engineers and architects, acquisitions specialists, and Seabee Combat Warfare Officers who qualify within Seabee units. They are responsibl ...

officers. Additional criticisms were no provisions for the

military organization Military organization or military organisation is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. In some countries paramilitary forces are included in a nati ...

military training Military education and training is a process which intends to establish and improve the capabilities of military personnel in their respective roles. Military training may be voluntary or compulsory duty. It begins with recruit training, procee ...

necessary to provide unit structure,

discipline Discipline refers to rule following behavior, to regulate, order, control and authority. It may also refer to punishment. Discipline is used to create habits, routines, and automatic mechanisms such as blind obedience. It may be inflicted on ot ...

, and

esprit de corps Morale, also known as esprit de corps (), is the capacity of a group's members to maintain belief in an institution or goal, particularly in the face of opposition or hardship. Morale is often referenced by authority figures as a generic value ...

. In December 1937, RADM.

Ben Moreell Admiral Ben Moreell (September 14, 1892 – July 30, 1978) was the chief of the U.S. Navy's Bureau of Yards and Docks and of the Civil Engineer Corps. Best known to the American public as the father of the Navy's Seabees, Moreell's life spanned ...

became BuDocks Chief and the lead proponent of the CB proposal. In 1941, the Navy and BuDocks decided to improve project oversight of civilian contractors by creating "Headquarters Construction Companies". These companies would have 2 officers and 99 enlisted, but would do no actual construction. On 31 October 1941, RADM.

Chester Nimitz Chester William Nimitz (; February 24, 1885 – February 20, 1966) was a fleet admiral in the United States Navy. He played a major role in the naval history of World War II as Commander in Chief, US Pacific Fleet, and Commander in C ...

, Chief of the Bureau of Navigation, authorized the formation of the 1st Headquarters Construction Company. Recruiting began in November while

boot training Military recruit training, commonly known as basic training or boot camp, refers to the initial instruction of new military personnel. It is a physically and psychologically intensive process, which resocializes its subjects for the unique deman ...

began 7 December 1941 at Naval Station Newport. By 16 December, four additional companies had been authorized, but Pearl Harbor changed everything.

World War II

Flag of the United States Navy (1864–1959)

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On 28 December 1941, Adm. Moreell requested authority to commission three Naval Construction Battalions. His request was approved on 5 January 1942 by

Admiral Nimitz Chester William Nimitz (; February 24, 1885 – February 20, 1966) was a fleet admiral in the United States Navy. He played a major role in the naval history of World War II as Commander in Chief, US Pacific Fleet, and Commander in C ...

. The 1st HQ Construction Company was used to commission the 1st Naval Construction Detachment, which was assigned to

Operation Bobcat Bora Bora ( French: ''Bora-Bora''; Tahitian: ''Pora Pora'') is an island group in the Leeward Islands. The Leeward Islands comprise the western part of the Society Islands of French Polynesia, which is an overseas collectivity of the French R ...

. They were sent to Bora Bora and are known in Seabee history as "Bobcats". Concurrently, the other requested companies had been approved. BuDocks took Companies 2 & 3 to form the 1st Naval Construction Battalion at Charleston, South Carolina. HQ Companies 4 & 5 were used for the 2nd CB. All four companies deployed independently. CBs 3, 4, & 5 were deployed the same way. CB 6 was the first battalion to deploy as a Battalion. Before all this could happen, BuDocks had to address the dual command issue. Naval regs stated unit command was strictly limited to line officers. BuDocks deemed it essential that CBs be commanded by CEC officers trained in construction. The

Bureau of Naval Personnel The Bureau of Naval Personnel (BUPERS) in the United States Department of the Navy is similar to the human resources department of a corporation. The bureau provides administrative leadership and policy planning for the Office of the Chief of Na ...

(BuPers) strongly opposed. Adm. Moreell took the issue directly to the

Secretary of the Navy The secretary of the Navy (or SECNAV) is a statutory officer () and the head (chief executive officer) of the Department of the Navy, a military department (component organization) within the United States Department of Defense. By law, the se ...

Frank Knox William Franklin Knox (January 1, 1874 – April 28, 1944) was an American politician, newspaper editor and publisher. He was also the Republican vice presidential candidate in 1936, and Secretary of the Navy under Franklin D. Roosevelt during ...

. On 19 March 1942, Knox gave the CEC complete command of all NCF personnel. Almost 11,400 would become CEC during WWII with 7,960 doing CB service. Two weeks earlier, on 5 March all CB personnel were officially named "Seabees". The first volunteers were tradesmen that received advanced rank for their trade skills. This resulted in the Seabees being the highest-paid group in uniform. To recruit these men, age and physical standards were waived up to age 50. Until November 1942 the average Seabee was 37, even so, all received the same

physical training Physical fitness is a state of health and well-being and, more specifically, the ability to perform aspects of sports, occupations and daily activities. Physical fitness is generally achieved through proper nutrition, moderate-vigorous physical ...

. In December,

FDR Franklin Delano Roosevelt (; ; January 30, 1882April 12, 1945), often referred to by his initials FDR, was an American politician and attorney who served as the 32nd president of the United States from 1933 until his death in 1945. As the ...

ordered the

Selective Service System The Selective Service System (SSS) is an independent agency of the United States government that maintains information on U.S. citizens and other U.S. residents potentially subject to military conscription (i.e., the draft) and carries out cont ...

to provide CB recruits. Enlistees could request CB service with a written statement certifying that they were trade qualified. This lasted until October 1943 when voluntary enlistment in the Seabees ceased until December 1944. By war's end, 258,872 officers and enlisted had served in the Seabees. They never reached the Navy's authorized quota of 321,056. In 1942, initial CB boot was at Camp Allen, VA., which moved to Camp Bradford, which moved to Camp Peary and finally moved to

Camp Endicott Camp Endicott was a United States Navy Seabee facility, part of Davisville Naval Construction Battalion Center at Quonset Point in North Kingstown, Rhode Island. A surviving portion of the camp, now mostly demolished, was listed on the National ...

, Rhode Island. CBs 1-5 were sent directly overseas for urgent projects. CBs that followed were sent to Advance Base Depots (ABDs) for deployment. Camp Rousseau at Port Hueneme became operational first and was the ABD to the Pacific. The Davisville ABD became operational in June with NTC

commissioned that August. Other CB Camps were

Camp Parks Parks Reserve Forces Training Area (PRFTA), commonly known as Camp Parks, is a United States Army base located in Dublin, California, that is currently an active military and training center for U.S. Army Reserve personnel to be used in case of ...

, Livermore, Ca., and Camp Lee-Stephenson, Quoddy Village, Eastport, Maine and Camp Holliday, Gulfport, Ms. CBs sent to the Pacific were attached to one of the four Amphibious Corps: I, III, and V were USMC. The

VII Amphibious Force Expeditionary Strike Group SEVEN/Task Force 76 (Amphibious Force U.S. SEVENTH Fleet) is a United States Navy task force. It is part of the United States Seventh Fleet and the USN's only permanently forward-deployed expeditionary strike group ...

was under General

Douglas MacArthur Douglas MacArthur (26 January 18805 April 1964) was an American military leader who served as General of the Army for the United States, as well as a field marshal to the Philippine Army. He had served with distinction in World War I, was ...

, Supreme Commander. MacArthur said the only problem he had with the Seabees was that he didn't have enough of them. Advance Bases The Office of Naval Operations created a code identifying Advance Base (AB) construction as a numbered metaphor for the size/type of base. That code was also used to identify the "unit" that would be the administration for that base. These were Lion, Cub, Oak and Acorn with a Lion being a main Fleet Base (numbered 1–6). Cubs were Secondary Fleet Bases 1/4 the size of a Lion (numbered 1–12). Oak and Acorn were the names given air installations, new or captured (airfield or airstrip). Cubs quickly gained status. The speed with which the Seabees could make one operational led the Marines to consider them a tactical component. Camp Bedilion shared a common fence-line with Camp Rousseau at Port Hueneme and was home to the Acorn Assembly and Training Detachment (AATD) As the war progressed, BuDocks realized that logistics required that Advance Base Construction Depots (ABCDs) be built and CBs built seven. When the code was first created, BuDocks foresaw two CBs constructing a Lion. By 1944 an entire Regiment was being used. The invasion of Okinawa took four Construction Brigades of 55,000 men. The Seabees built the infrastructure needed to take the war to Japan. By war's end CBs had, served on six continents, constructed over 300 bases on as many islands. They built everything: airfields, airstrips,

pier Seaside pleasure pier in Brighton, England. The first seaside piers were built in England in the early 19th century.">England.html" ;"title="Brighton, England">Brighton, England. The first seaside piers were built in England in the early 19th ...

s, wharves, breakwaters, PT &

seaplane A seaplane is a powered fixed-wing aircraft capable of taking off and landing (alighting) on water.Gunston, "The Cambridge Aerospace Dictionary", 2009. Seaplanes are usually divided into two categories based on their technological characteri ...

bases, bridges, roads, com-centers, fuel farms, hospitals, barracks and anything else. In the Atlantic the Seabees biggest job was the preparations for the

Normandy landing The Normandy landings were the landing operations and associated airborne operations on Tuesday, 6 June 1944 of the Allied invasion of Normandy in Operation Overlord during World War II. Codenamed Operation Neptune and often referred to as ...

. After which CBMUs 627, 628, and 629 were tasked to facilitate the crossing of the

Rhine ), Surselva, Graubünden, Switzerland , source1_coordinates= , source1_elevation = , source2 = Rein Posteriur/Hinterrhein , source2_location = Paradies Glacier, Graubünden, Switzerland , source2_coordinates= , source ...

. For CBMU 629 it was front-line work. The Pacific is where 80% of the NCF deployed.

African American Service: the Seabee stevedores

In February 1942 CNO Admiral Harold Rainsford Stark recommended African Americans for ratings in the construction trades. In April the Navy announced it would enlist African Americans in the Seabees. Even so, there were just two CBs that were "

colored ''Colored'' (or ''coloured'') is a racial descriptor historically used in the United States during the Jim Crow Era to refer to an African American. In many places, it may be considered a slur, though it has taken on a special meaning in Sout ...

" units, the 34th and 80th. Both had white Southern officers and black enlisted. Both battalions experienced problems with that arrangement that led to the replacement of the officers. The men of the 34th went on a hunger strike which made national news. The Commander of the 80th had 19 enlisted dishonorably discharged for sedition. The

NAACP The National Association for the Advancement of Colored People (NAACP) is a civil rights organization in the United States, formed in 1909 as an interracial endeavor to advance justice for African Americans by a group including W. E.&n ...

and

Thurgood Marshall Thurgood Marshall (July 2, 1908 – January 24, 1993) was an American civil rights lawyer and jurist who served as an associate justice of the Supreme Court of the United States from 1967 until 1991. He was the Supreme Court's first African-A ...

got 14 of those reversed. In early 1943 the Navy commissioned its first African American officers. The first to enter the Seabees officer corps was MIT grad Edward Swain Hope. In May 1943 he completed CEC training at Camp Endicott and was posted as the Public Works officer at Manana barracks Hawaii Territory. That same year, the Navy drew up a proposal to raise the number of colored CBs to 5 and require that all non-rated men in the next 24 CBs be colored. The proposal was approved, but not acted on. The lack of stevedores in combat zones was a huge issue for the Navy. Authorization for the formation of cargo handling CBs or "Special CBs" happened mid-September 1942.live.mil/326-2/ This week in Seabee History, Sept 17–23, Seabee Online Magazine, NAVFAC Engineering Command, Wash. Navy Yard, DC.
/ref> By wars end 41 Special CBs had been commissioned of which 15 were "colored". Neither the Navy or NCF used that label, the units were simply segregated in the men assigned to them. The Special CBs were the first fully integrated units in the U.S. Navy. V-J Day brought the decommissioning of all of them. The Special CBs were forerunners of today's

Navy Cargo Handling Battalion The Navy Cargo Handling Battalion (NCHB) Provides the flexible support of logistics in the form of transportation (deployable), and supply support globally where needed by the United States Military. It was established in the early 2000s (They ...

s of the

Navy Expeditionary Logistics Support Group (United States) Navy Expeditionary Logistics Support Group (NAVELSG) is an echelon IV command in the United States Navy and part of Navy Expeditionary Combat Command (NECC). Mission Navy Expeditionary Logistics Support Group (NAVELSG) is a vital enabler of Mari ...

. The arrival of 15 African American Special CBs in Pearl Harbor made segregation an issue for the

14th Naval District The naval district was a U.S. Navy military and administrative command ashore. Apart from Naval District Washington, the Districts were disestablished and renamed Navy Regions about 1999, and are now under Commander, Naval Installations Command ...

.Historical Content Significance, Naval Aviation Supply Depot Hut 33 at Waiawa Gulch, Peral City, U.S. Dept of Interior, Nat. Park Service, p. 10
/ref> For a protracted period the men lived in tents, but the disparity of treatment was obvious even to the Navy. The 14th Naval District Command felt they deserved proper shelter with at least separate but equal barracks. Manana Barracks and Waiawa Gulch became the United States' largest "colored" installation with over 4,000 Seabee stevedores barracked there. It was the site of racial strife to the point that the camp was fenced in and placed under armed guard. The Seabees were trucked to and from the docks in cattle trucks. Two naval supply depots were located at Waiawa Gulch. At wars end 12,500 African Americans would serve in the Construction Battalions. The 17th Special CB was one of the segregated Specials and was at

in September 1944. The unit is not listed in the USMC order of battle at

despite being attached to the 1st Marine Pioneers. On D-day, the

7th Marines The 7th Marine Regiment is an infantry regiment of the United States Marine Corps based at Marine Corps Air Ground Combat Center Twentynine Palms, California. Nicknamed the "Magnificent Seventh", the regiment falls under the command of the 1st ...

had a situation where they did not have the men to man the lines and get the wounded to safety. Coming to their aid were the 2 companies of the 16th Marine Field Depot (segregated) and the 17th Special CB. The Japanese mounted a banzai

counter-attack A counterattack is a tactic employed in response to an attack, with the term originating in "war games". The general objective is to negate or thwart the advantage gained by the enemy during attack, while the specific objectives typically seek ...

at 0200 hours that night. By the time it was over, nearly the entire 17th had volunteered to carry

ammunition Ammunition (informally ammo) is the material fired, scattered, dropped, or detonated from any weapon or weapon system. Ammunition is both expendable weapons (e.g., bombs, missiles, grenades, land mines) and the component parts of other we ...

to the

front lines ''Front Lines'' is a 1994 computer wargame for MS-DOS developed and published by Impressions Games. Gameplay ''Front Lines'' is a wargame with a turn-based play system, using vehicles. Reception In ''PC Gamer US'', William R. Trotter called ...

on the stretchers they brought the wounded back on. They filled the line where the wounded had been, manned 37mm guns that had lost crews and volunteered for anything the Marines needed. The 17th remained with the 7th Marines until the right flank had been secured D+3. There is nothing comparable in USMC history. According to the Military History Encyclopedia on the Web, "were it not for the Black Marine shore party---the (banzai) on the 7th Marines would not have been repulsed". * On Peleliu, shore party detachments from the 33rd and 73rd CBs received Presidential Unit Citations as did the primary shore party (1st Marine Pioneers). The Commander of the 17th Special CB received the same commendatory letter as the Company Commanders of the 7th Marine Ammunition Co. and the 11th Marine Depot Co. Before the battle was even over, Maj. Gen. Rupertus, USMC wrote to each: * African American Seabees

Seabee North Slope Oil Exploration 1944

Winterized wildcat Seabee 1 in NPR 4,at Umiat, Alaska

Construction Battalion Detachment (CBD) 1058 was formed from "screening Camp Peary and the NCF for

geologist A geologist is a scientist who studies the solid, liquid, and gaseous matter that constitutes Earth and other terrestrial planets, as well as the processes that shape them. Geologists usually study geology, earth science, or geophysics, althou ...

s, petroleum engineers, oil drillers, tool pushers, roustabouts and roughnecks" and later designated 1058.Exploration of Naval Petroleum Reserve No. 4 and Adjacent Areas Northern Alaska, 1944–53 Part 1, History of the Exploration By John C. Reed, CDR, USNR, Geological Survey Professional Paper 301 Prepared and published at the request of and in cooperation with the U. S. Dept. of the Navy, Office of Naval Petroleum and Oil Shale Reserves, US GPO, Washington: 1958, pp. 4, 23
/ref> Additional personnel were chosen for their

arctic The Arctic ( or ) is a polar regions of Earth, polar region located at the northernmost part of Earth. The Arctic consists of the Arctic Ocean, adjacent seas, and parts of Canada (Yukon, Northwest Territories, Nunavut), Danish Realm (Greenla ...

experience with CBs 12 and 66. They mustered at Camp Lee Stephenson for Operation Pet 4. Congress put $1,000,000 aside to wildcat for oil in U.S. Navy Petroleum Reserve No. 4 (NPR-4) in 1944. NPR-4 had been created and placed in the

oil reserve Oil and gas reserves denote ''discovered'' quantities of crude oil and natural gas (oil or gas fields) that can be profitably produced/recovered from an approved development. Oil and gas reserves tied to approved operational plans filed on th ...

in 1923. Today NPR-4 is the

National Petroleum Reserve in Alaska National may refer to: Common uses * Nation or country ** Nationality – a ''national'' is a person who is subject to a nation, regardless of whether the person has full rights as a citizen Places in the United States * National, Maryland, c ...

. The detachment's mission was: * Do a detailed geologic study at Umiat and

Cape Simpson Cape Simpson is a high rocky bluff at the north end of Ufs Island, forming the east side of the entrance to Howard Bay. Discovered in February 1931 by the British Australian New Zealand Antarctic Research Expedition (BANZARE) under Mawson. H ...

* Drill test and core holes * Drill a deep well * Do complete aerial and overland pipeline surveys for NPR 4. * Build a base camp with a runway at Point Barrow * Build field camp runways at Umiat and Bettles On July 19 the

USS Spica USS ''Spica'' is a name used more than once by the United States Navy: * , a ''Sirus''-class cargo ship commissioned by the U.S. Navy for service in World War II. * , a laid down, 1 April 1965, at Swan Hunter & Wigham Richardson Ltd., Wallsend- ...

headed north with the S.S. Jonathan Harrington for Point Barrow and

. The det's base camp was constructed at Point Barrow. Four D-8s with twenty sleds of supplies were prepped for the 330-mile trek to Umiat once the

tundra In physical geography, tundra () is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. The term ''tundra'' comes through Russian (') from the Kildin Sámi word (') meaning "uplands", "treeless mou ...

had frozen. The first tractor train delivered supplies, the second, heavy well equipment. The D8s would make eight trips total. When summer arrived a wildcat was drilled to 1,816' before the cold shut down operations. The hole was designated Seabee#1 It was near four known

seeps A petroleum seep is a place where natural liquid or gaseous hydrocarbons escape to the earth's atmosphere and surface, normally under low pressure or flow. Seeps generally occur above either terrestrial or offshore petroleum accumulation stru ...

Umiat Umiat (OO-mee-yat) is an unincorporated community in North Slope Borough, Alaska, United States. It is located on the Colville River, 140 miles southwest of Deadhorse in the Arctic Circle. The town is not accessible by road or rail, only by air ...

in the very south-east of NPR 4. The rock strata there was from the

Upper Cretaceous The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', ...

and a

stratum In geology and related fields, a stratum ( : strata) is a layer of rock or sediment characterized by certain lithologic properties or attributes that distinguish it from adjacent layers from which it is separated by visible surfaces known as e ...

of it was named the "Seabee Formation".Div. of Geological & Geophysical Surveys Preliminary Interpretive Report 2008-1, Preliminary Results Of Recent Geologic Field Investigations in the Brooks Range Foothills and North Slope, Alaska by Marwan A. Wartes and Paul L. Decker, March 2008, Released by State of Alaska, Dept. of Natural Resources, Div. of Geological & Geophysical Surveys, Fairbanks, AK.
/ref> On the coast the Seabees drilled test holes at Cape Simpson and Point Barrow. Once the runways were completed additional supplies were flown in. In March 1946 civilians took over the project. Some Seabees of CBD 1058 were hired immediately upon discharge to continue doing the work they had been doing" The Navy applied the cold weather experience from CBD 1058 for

Operation Highjump Operation HIGHJUMP, officially titled The United States Navy Antarctic Developments Program, 1946–1947, (also called Task Force 68), was a United States Navy (USN) operation to establish the Antarctic research base Little America IV. The opera ...

and

Operation Deep Freeze Operation Deep Freeze (OpDFrz or ODF) is codename for a series of United States missions to Antarctica, beginning with "Operation Deep Freeze I" in 1955–56, followed by "Operation Deep Freeze II", "Operation Deep Freeze III", and so on. (There ...

. Seabee #1 remains a

USGS The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, ...

monitor well today. Land surveys Twice the Seabees have been tasked with large-scale land surveys. The first was done by CBD 1058 for a proposed NPR 4 pipeline route to Fairbanks. The Trans-Alaskan pipeline follows a portion of their survey from roughly the

arctic circle The Arctic Circle is one of the two polar circles, and the most northerly of the five major circles of latitude as shown on maps of Earth. Its southern equivalent is the Antarctic Circle. The Arctic Circle marks the southernmost latitude at ...

to Fairbanks. The second would be done by a Seabee team from MCB 10. They went to Vietnam in 1956 to survey and map the existing road network. That survey was extensively used during the

Vietnam War The Vietnam War (also known by #Names, other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vie ...

. see Notes Malaria and Epidemic Control Group BUMED created the Malaria and Epidemic Control Group to deal with insect-borne diseases. Between August 1942, and February 1943, American troops in the Pacific averaged 10

malaria Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or death. ...

cases for every combat injury. Seabees oiled, drained and sprayed mosquito breeding areas and inspected and fumigated ships and aircraft transiting malaria-infested areas. It was an important task that absolutely needed to be done in order for the United States to field an effective combat force. On Guadalcanal the 63rd CB had malaria control as its primary task. At Gulfport a school was established to train Battalions for the Malaria and Epidemic Control Group.

World War II Seabees outside the NCF

During World War II Seabees were tasked outside the NCF in the USMC, NCDUs, and UDTs.

Marine Corps

USMC historian Gordon L. Rottman wrote "that one of the biggest contributions the Navy made to the Marine Corps during WWII was the creation of the Seabees". In exchange, the Corps would be influential upon the CB organization and its history. After the experience of

the

Department of War War Department may refer to: * War Department (United Kingdom) * United States Department of War (1789–1947) See also * War Office, a former department of the British Government * Ministry of defence * Ministry of War * Ministry of Defence {{u ...

decided that the Marines and Seabees would make all subsequent landings together. That arrangement led to numerous Seabee claims that they had landed first, even leaving signs on the beach asking the Marines "What took you so long?" The Seabees in the UDTs made an effort of this that their mates in the CBs approved of. When the first three CBs were formed the Seabees did not have a base of their own. Upon leaving

boot A boot is a type of footwear. Most boots mainly cover the foot and the ankle, while some also cover some part of the lower calf. Some boots extend up the leg, sometimes as far as the knee or even the hip. Most boots have a heel that is c ...

the recruits were sent to

National Youth Administration The National Youth Administration (NYA) was a New Deal agency sponsored by Franklin D. Roosevelt during his presidency. It focused on providing work and education for Americans between the ages of 16 and 25. It operated from June 26, 1935 to ...

camps in Illinois, New Jersey, New York, and Virginia to receive military training from the Marine Corps. The Marine Corps listed CBs on their Table of organization: "D-Series Division" for 1942, "E-Series Division" for 1943, and "Amphibious Corps" for 1944–45. When CBs were created the Marine Corps wanted one for each of the three Marine Divisions, but were told no because of war priorities. Even so, early Seabee units were connected with Marine Corps ops. The 1st Naval Construction Detachment (Bobcats) together with and A Co CB 3 was transferred to the Marines and redesignated 3rd Battalion

22nd Marines The 22nd Marine Regiment (22nd Marines) is an inactive United States Marine Corps infantry regiment. The regiment was commissioned in 1942 and was placed under the command of the 1st Provisional Marine Brigade, and the 6th Marine Division. It ...

. The Bobcats had deployed without receiving advanced military training. The 22nd Marines took care of that. The 4th Construction Detachment was attached to the 5th Marine Defense Battalion for two years. By autumn, the 18th, 19th and 25th CBs had been transferred to the Corps as combat engineers.Rottman (2002), pp. 218–220. Each was attached to a composite engineer regiment, redesignated as 3rd Battalion:

17th Marine Regiment The 17th Marine Regiment was a composite engineer regiment of the United States Marine Corps subordinate to the 1st Marine Division. It was formed primarily from units of the Division, and was inactivated during war with the 1st and 2nd battalions ...

18th Marine Regiment The 18th Marine Regiment was a composite engineer regiment of the United States Marine Corps subordinate to the 2nd Marine Division. It was disbanded during the war, with the 1st and 2nd battalions remaining in the Division. Subordinate units The ...

19th Marine Regiment The 19th Marine Regiment was a composite engineer regiment of the United States Marine Corps subordinate to the 3rd Marine Division. It existed from September 1942 until September 1944. In December 1943 there was a large change of command in th ...

, and

20th Marine Regiment 20th Marine Regiment was a Composite Engineer Regiment of the United States Marine Corps that fought during World War II.U.S. Marine Corps World War II Order of Battle Fleet Marine Force Ground Units, Rottman p. 220''/ref> Subordinate units ...

. The 18th and 19th CBs each claim to have been the first CBs authorized to wear standard USMC issue. Both received their military training and USMC duffle bag at MTC New River, NC. There is no record of how many CBs received USMC issue. It is known that the 31st, 43rd, 76th, 121st and 133rd CBs received partial or complete issues. On 15 January 1944 the 142nd CB was commissioned at New River,Camp Lejeune. On 2 February that Battalion arrived at Camp Pendelton for further training, mounting out 19 April. After Guadalcanal amphibious operations became joint USMC/Seabee pairings. The 6th CB joined the 1st Marine Division after combat had started on Guadalcanal. The 18th CB was sent to join them from Fleet Marine Force depot Norfolk. Many more would follow. The 6th Special CB was tasked to the 4th Marines Depot in the Russells. November saw the 14th CB tasked to the 2nd Raider Bn on Guadalcanal. In June, the 24th CB had been tasked to the 9th Marine Defense Bn on Rendova. The 33rd and 73rd CBs had dets tasked to the 1st Pioneers as shore party on

as was the 17th Special CB

. At Enogi Inlet on Munda, a 47th det was shore party to the 1st and 4th

Marine Raiders The Marine Raiders are special operations forces originally established by the United States Marine Corps during World War II to conduct amphibious light infantry warfare. " Edson's" Raiders of 1st Marine Raider Battalion and " Carlson's" Rai ...

. The 3rd Marine Div. made the Commander of the 71st CB shore party commander on Bougainville. His 71st had support from the 25th, 53rd, and 75th CBs. At

Cape Torokina Cape Torokina is a promontory at the north end of Empress Augusta Bay, along the central part of the western coast of Bougainville, in Papua New Guinea. This cape formed the southern end of the landing zone where I Marine Amphibious Corps perform ...

the 75th had 100 men volunteer to make the assault of the 3rd Marines. Also at Bougainville, the 53rd provided shore parties to the 2nd Raiders on green beach and the 3rd Raiders on Puruata Island. The 121st was formed at the CB Training Center of MTC Camp Lejuene as 3rd Bn 20th Marines. They would be shore party to the 23rd Marines on Roi-Namur, Saipan, and Tinian. When the Marine Engineer Regiments were inactivated in 1944, CBs were then tasked to Marine Divisions. For

, the 31st and 133rd were attached to the 4th and 5th Marine Divisions. The 133rd was shore party to the 23rd Marines. PDFs 6 and 7, Appendix 1 Annex Dog (Shore Party Log D-Day–D+18) while the 31st CB was in the 5th Shore Party Regiment. The 31st demolitionsmen attached directly to the Division. The 8th Marine Field Depot was the shore party command eschelon for Iwo Jima. They requested 26 heavy equipment operators and received volunteers from CB 8. Okinawa saw the 58th, 71st, 130th, and 145th CBs detached from the Navy and tasked to the Marine Corps 6th, 2nd, and 1st Marine Divisions respectively. From Iwo Jima the 5th Marine Div. returned to Camp Tarawa to have the 116th CB attached. When Japan fell the 116th CB was part of the occupation force. V-J day left thousands of Japanese troops in China and the III Marine Amphibious Corps was sent there to get them home. The 33rd NCR was assigned to III Marine Amphib. Corps for this mission. CBs were also tasked individually to the three USMC Amphibious Corps. The 19th CB started out with the I MAC prior to joining the 17th Marines. The 53rd CB was attached to I MAC as Naval Construction Battalion I M.A.C. When I MAC was redesignated

III Amphibious Corps III Marine Expeditionary Force (III MEF) is a formation of the Marine Air-Ground Task Force of the United States Marine Corps. It is forward-deployed and able to rapidly conduct operations across the spectrum from humanitarian assistance and ...

the battalion became an element of the 1st Provisional Marine Brigade. For Guam, III Amphibious Corps had the 2nd Special CB, 25th, and 53rd CBs. The CO 25 CB was shore party commander for the 3rd Marines on beaches Red 1 and Red 2. The 3rd Marines would award 25's shore party 17 bronze stars.

V Amphibious Corps The V Amphibious Corps (VAC) was a formation of the United States Marine Corps which was composed of the 3rd, 4th and 5th Marine Divisions in World War II. The three divisions were the amphibious landing force for the United States Fifth Fleet ...

(VAC) had the 23rd Special and 62nd CBs on Iwo Jima. On Tinian the 6th Construction Brigade was attached to V Amphibious Corps. * Two sections of CBMU 515 saw combat with the 22nd Marines on Guam. *When the decision was made to construct Marine Corps Base, Camp Pendleton in 1942, BuDocks issued the main contracts to civilian contractors. However, the base project was so large that some smaller contracts were awarded to the Seabees, one of which was a Quonsent Camp for USMC instruction of Naval Construction Battalions in area 25(Vado del Rio). Seabees were also involved in the construction of Camp Del Mar in area 21 and erected a temporary construction camp close by while they were assigned. When the war ended the Seabees had a unique interservice standing with the U.S. Marine Corps. Seabee historian

William Bradford Huie William Bradford Huie (November 13, 1910 – November 20, 1986) was an American writer, investigative reporter, editor, national lecturer, and television host. His credits include twenty-one books that sold over 30 million copies worldwide. In ad ...

wrote "that the two have a camaraderie unknown else-wheres in the U.S. military". Even though they are "Navy" the Seabees adopted USMC fatigues with a Seabee insignia in place of the EGA. At least 10 CB units incorporated USMC insignia into theirs. Admiral Moreell wrote, tongue in cheek, that the Marines were the best fighting men in the Pacific, but one had to serve 90 days with the Seabees to qualify to as a "Junior Bee".

Naval Combat Demolition Units

In early May 1943, a two-phase "Naval Demolition Project" was ordered by the

"to meet a present and urgent requirement" for the invasion of Sicily. Phase-1 began at Amphibious Training Base (ATB)

Solomons, Maryland Solomons, also known as Solomons Island, is an unincorporated community and census-designated place (CDP) in Calvert County, Maryland, United States. The population was 2,368 at the 2010 census, up from 1,536 in 2000. Solomons is a popular weekend ...

with the creation of Operational Naval Demolition Unit # 1. Six Officers led by Lt. Fred Wise CEC and eighteen enlisted reported from Camp Peary dynamiting and demolition school. Seabees called them "Demolitioneers". Naval Combat Demolition Units (NCDUs) consisted of one junior CEC officer, five enlisted, and were numbered 1–216. After that first group had been trained, Lt. Commander

Draper Kauffman Rear Admiral Draper Laurence Kauffman (4 August 1911 – 18 August 1979) was an American underwater demolition expert, who served during the 1960s as 44th Superintendent of the United States Naval Academy. During World War II, he organized the fi ...

was selected to command the program. It had been set up in Camp Peary's "Area E"(explosives) at the dynamiting and demolition school. Between May and mid-July, the first six NCDU classes graduated at Camp Peary. While the program was at Camp Peary the men were given head-of-the-line privileges at the mess hall. The program was moved to

Fort Pierce Fort Pierce is a city in and the county seat of St. Lucie County, Florida, United States. The city is part of the Treasure Coast region of Atlantic Coast Florida. It is also known as the Sunrise City, sister to San Francisco, California, the Su ...

where the first class began mid-July. Despite the move, Camp Peary remained Kauffman's primary recruit center. "He would go back to the dynamite school, assemble the (Seabees) in the auditorium and say, ''"I need volunteers for hazardous, prolonged and distant duty."'' Fort Pierce had two CB units assigned, CBD 1011 and CBMU 570. They were tasked with the construction and maintenance of obstacles needed for demolition training. The

invasion of Normandy Operation Overlord was the codename for the Battle of Normandy, the Allied operation that launched the successful invasion of German-occupied Western Europe during World War II. The operation was launched on 6 June 1944 (D-Day) with the Norm ...

had 34 NCDUs. When the first ten arrived in England they had no CO. Lt. Smith (CEC) assumed the role, splitting them up to train with the 146th, 277th and 299th Combat Engineers. As more NCDUs arrived they did the same, with 5 combat engineers attached to each NCDU. Group III (Lt. Smith) did

research and development Research and development (R&D or R+D), known in Europe as research and technological development (RTD), is the set of innovative activities undertaken by corporations or governments in developing new services or products, and improving existi ...

and is credited with developing the Hagensen Pack. NCDUs had a 53% casualty rate at Normandy. Four from Utah beach later took part in

Operation Dragoon Operation Dragoon (initially Operation Anvil) was the code name for the landing operation of the Allied invasion of Provence ( Southern France) on 15August 1944. Despite initially designed to be executed in conjunction with Operation Overlord ...

. With Europe invaded, Admiral Turner requisitioned all available NCDUs from Fort Pierce for integration into the UDTs for the Pacific. That netted him 20 NCDUs that had received Presidential Unit Citations and another 11 that had gotten Navy Unit Commendations. Prior to Normandy 30 NCDUs had embarked to the Pacific and another three had gone to the

Mediterranean The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on ...

. NCDUs 1–10 were staged at Turner City on

Florida Island The Nggela Islands, also known as the Florida Islands, are a small island group in the Central Province of Solomon Islands, a sovereign state (since 1978) in the southwest Pacific Ocean. The chain is composed of four larger islands and about ...

in the beginning of 1944. NCDU 1 was briefly in the

Aleutians The Aleutian Islands (; ; ale, Unangam Tanangin,”Land of the Aleuts", possibly from Chukchi ''aliat'', "island"), also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a chain of 14 large vo ...

in 1943. The first NCDUs in combat were 4 and 5 with the 4th Marines on Green Island, Papua New Guinea and Emirau Island. Later, NCDUs 1–10 were combined to form the short-lived UDT Able. NCDUs 2, 3, 19, 20, 21 and 24 were assigned to MacArthur's 7th Amphibious Force and were the only NCDUs remaining at the war's end. see Notes

Underwater Demolition Teams (UDT)s

Prior to

Operation Galvanic The Battle of Tarawa was fought on 20–23 November 1943 between the United States and Japan at the Tarawa Atoll in the Gilbert Islands, and was part of Operation Galvanic, the U.S. invasion of the Gilberts. Nearly 6,400 Japanese, Koreans, an ...

and Tarawa, V Amphibious Corps had identified

coral Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and se ...

as an issue for future

amphibious operations Amphibious warfare is a type of offensive military operation that today uses naval ships to project ground and air power onto a hostile or potentially hostile shore at a designated landing beach. Through history the operations were conducte ...

. RADM Kelly Turner, commander V Amphibious Corps had ordered a review to get a grip on the problem. VAC found that the only people having any applicable experience with the material were men in the Naval Construction Battalions. Lt. Thomas C. Crist, of CB 10, was in Pearl Harbor from Canton Island where he had been in charge of clearing

coral heads Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and sec ...

. His being in Pearl Harbor was pivotal in UDT history. While there he learned of the Adm. Turner's interest in coral blasting and met with him. The Admiral tasked Lt. Crist to develop a method for blasting coral under combat conditions and putting together a team to do it. Lt. Crist started by getting men from CB 10, but got the remainder from the 7th Construction Regiment. By 1 December 1943 he had close to 30 officers and 150 enlisted at

Waipio Waipio () is a census-designated place (CDP) located in the Ewa District of the island of Oahu in the City & County of Honolulu, Hawaii, United States. In Hawaiian, ''wai pio'' means "curved water". As of the 2020 census, the CDP had a populat ...

Amphibious Operating Base on Oahu. In November the Navy had a hard lesson with coral and tides at

Tarawa Tarawa is an atoll and the capital of the Republic of Kiribati,Kiribati
''

Underwater Demolition Teams to address those issues. Six teams for VAC in the Central Pacific while the other three would go to III Amphibious Corps in the South Pacific. UDTs 1 & 2 were formed from the 180 men Lt. Crist had staged. Seabees make up the majority of the men in teams 1–9, 13 and 15. How many Seabees were in UDTs 10 and 12 is not listed, for UDT 11 they composed 20% of the team. UDT officers were mainly CEC. UDT 10 had 5 officers and 24 enlisted originally trained as OSS Maritime Unit: Operational Swimmer Group II, but the OSS was not allowed to operate in the Pacific Theater. Adm. Nimitz needed swimmers and approved their transfer from the OSS to his control. The MU men brought with the swimfins they had trained with and the Seabees made them a part of UDT attire as quickly as the Supply dept. could get them. In the Seabee dominated teams the next largest group of UDT volunteers came from the joint Army-Navy

Scouts and Raiders The United States Navy Sea, Air, and Land (SEAL) Teams, commonly known as Navy SEALs, are the U.S. Navy's primary special operations force and a component of the Naval Special Warfare Command. Among the SEALs' main functions are conducting s ...

school that was also in Fort Pierce. Additional volunteers came from the Navy's Bomb disposal School, Marine Corps and U.S. Fleet. The first team commanders were Cmdr. E.D. Brewster (CEC) UDT 1 and Lt. Crist (CEC) UDT 2. Both Teams were "provisional" totaling the 180 men Lt Crist had put together from the 7th NCR. Those men were put through five weeks of training by a Marine Corps Amphibious Reconnaissance Battalion. They wore fatigues, life-vests and were expected to stay in their rubber boats like the NCDUs. At Kwajalein Adm.Turner ordered daylight

recon Recon may refer to: * Reconnaissance, a military term for gathering information * '' Halo 3: Recon'', a standalone expansion for the video game ''Halo 3'' * "Recon" (''Lost''), the eighth episode of the sixth season of ''Lost'' * ''Recon'' (ro ...

. It was apparent to the Seabees that staying in the boats would not get the Admiral the

intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 ser ...

he wanted. Cmdr. Brewester's men all wore swim trucks under their

fatigues Workwear is clothing worn for work, especially work that involves manual labour. Often those employed within trade industries elect to be outfitted in workwear because it is built to provide durability and safety. The workwear clothing industry i ...

Ensign An ensign is the national flag flown on a vessel to indicate nationality. The ensign is the largest flag, generally flown at the stern (rear) of the ship while in port. The naval ensign (also known as war ensign), used on warships, may be diffe ...

Lewis F. Luehrs, and Charp. Bill Acheson spent 45 minutes in the water in broad daylight and were the first team members recovered. Still wet and in their trunks they reported directly to Adm. Turner. He concluded what they had done was the only way to get accurate intelligence on submerged obstacles and conveyed that opinion to Adm. Nimitz. At

Engebi Enewetak Atoll (; also spelled Eniwetok Atoll or sometimes Eniewetok; mh, Ānewetak, , or , ; known to the Japanese as Brown Atoll or Brown Island; ja, ブラウン環礁) is a large coral atoll of 40 islands in the Pacific Ocean and with i ...

Cmdr. Brewster was wounded. The success of UDT-1 not following USMC Recon protocol rewrote the UDT mission model and training regimen. Ens. Luehrs and Charp. Acheson were each awarded a

Silver Star The Silver Star Medal (SSM) is the United States Armed Forces' third-highest military decoration for valor in combat. The Silver Star Medal is awarded primarily to members of the United States Armed Forces for gallantry in action against an e ...

for their initiative while unintentionally creating the UDT "naked warrior" image. Diving masks were uncommon in 1944 and some men had tried using goggles at Kwajalein.Naked Warriors, Cdmr. Francis Douglas Fane USNR (Ret.), St. Martin's Press, New York, 1996, p. 828 Diving masks were a rare item in Hawaii so Lt. Crist and CB Chief Howard Roeder had requested supply get them. A fortuitous observation by one of the men spotted a magazine

advertisement Advertising is the practice and techniques employed to bring attention to a product or service. Advertising aims to put a product or service in the spotlight in hopes of drawing it attention from consumers. It is typically used to promote a ...

for diving masks. A priority dispatch was made to the States that appropriated the store's entire stock. The UDTs adopted goggles independent of the OSS. When UDTs 1 and 2 returned to Hawaii Chief Acheson and three other UDT Officers were transferred to the 301st dredging CB. The 301st had 12 dredges saving Teams from blasting channels, but needed divers to get the job done. Ensign Leuhrs made Lt. and was a member of UDT 3 until he was made XO of team 18. Commander Brewster's purple heart got him out of the UDTs and elevated to Commander 7th NCR instead of back to CB 10. Adm. Turner also requested the formation of a Demolition Training Center at Kihei. It was approved. The actions of UDT 1 provided the training model, making UDT training distinctly different from Fort Pierce's NCDU program. Lt. Crist was briefly the first training officer and emphasized swimming and recon until he was made CO of UDT 3. When UDT 3 returned from Leyte in the fall of 1944 it became the school instructors with Lt. Crist again OIC of training. The classes now included: night ops, weapons, bivouacking, small unit tactics, along with coral and

lava Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or ...

blasting. In April 1945, team 3 was sent to Fort Priece to instruct there. Lt. Crist was promoted to Lt. Cmdr. and sent back to Kihei. Team 3 would train teams 12–22. UDT 14 is called the first "all fleet team" even though it had Seabees from Team Able and the CO and XO were both CEC. UDT 15 was the last team formed of NCDUs. Teams 12–15 were sent to Iwo Jima. Three cleared the shoreline for five days, D+2-D+7. After July 1944 new UDTs were only USN. In 1945, CBMU 570 was tasked to the UDT coldwater training center at ATB Oceanside, CA. On Guam team 8 requested permission to build a base. It was approved by AdComPhibsPac, but disapproved by Island Command. Team 8 turned to the CBs on the island and got everything needed. Coral paving got placed the night before Admiral Nimitz inspected, giving teams 8 & 10 a glowing review. By V-J day 34 teams had been formed. Teams 1–21 saw actual deployment with the Seabees providing over half of the men in those teams. The Navy did not publicize the existence of the UDTs until post-war and when they did they gave credit to Lt. Cmdr. Kauffman and the Seabees. During World War II the Navy did not have a rating for the UDTs nor did they have an insignia. Those men with the CB rating on their uniforms considered themselves Seabees that were doing underwater demolition. They did not call themselves "UDTs" or " Frogmen", but rather "Demolitioneers" reflecting where Lt. Cmdr. Kauffman had recruited them from, the CB dynamiting and demolition school. UDTs had to be of standard recruiting age, Seabees older could not volunteer. Mid-year 1945, in preparation for the cooler waters around Japan, a cold water training center was created. With it came a more demanding

physical Physical may refer to: * Physical examination, a regular overall check-up with a doctor * ''Physical'' (Olivia Newton-John album), 1981 ** "Physical" (Olivia Newton-John song) * ''Physical'' (Gabe Gurnsey album) * "Physical" (Alcazar song) (2004) * ...

. Team 9 lost 70% of the team to this change. Postwar, MCB 7 was tasked with projects at the UDT training facility on

St. Thomas, Virgin Islands Saint Thomas ( da, Sankt Thomas) is one of the Virgin Islands in the Caribbean Sea which, together with Saint John, Water Island, Hassel Island, and Saint Croix, form a county-equivalent and constituent district of the United States Virgin ...

see Notes

Cold War

When World War II ended the

Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because t ...

began. Seabee service during this period supported a broad spectrum of the national interest; nuclear testing, two wars, embassy security, space race, CIA, military communications, international relations, pure science, and Camp David.

Postwar interlude: Siberia-China

On V-J-Day CB 114 was in the Aleutians. In September 1945 the battalion sent a detachment to the

USSR The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nati ...

to build a Fleet Weather Central. It was located outside

Petropavlovsk-Kamchatsky Petropavlovsk-Kamchatsky ( rus, Петропавловск-Камчатский, a=Петропавловск-Камчатский.ogg, p=pʲɪtrɐˈpavləfsk kɐmˈtɕatskʲɪj) is a city and the administrative, industrial, scientific, and cultu ...

on the

Kamchatka Peninsula The Kamchatka Peninsula (russian: полуостров Камчатка, Poluostrov Kamchatka, ) is a peninsula in the Russian Far East, with an area of about . The Pacific Ocean and the Sea of Okhotsk make up the peninsula's eastern and w ...

. The original agreement gave the Seabees 3 weeks to complete the base. Upon arrival the Russians told them they had 10 days and were amazed it was done in 10. It was one of two that

Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as General Secretar ...

agreed to. V-J-Day brought about Operation Beleaguer and the repatriation of the Japanese Army from

China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...

. Elements of the 33rd CB Regiment were involved: CBs 83, 96, 122 and 32nd Special. These units landed at Tsingtao and Tangku in November 1945 attached to the 6th Marine Division. CB 42 and A Co. 33rd Special landed at

Shanghai Shanghai (; , , Standard Chinese, Standard Mandarin pronunciation: ) is one of the four Direct-administered municipalities of China, direct-administered municipalities of the China, People's Republic of China (PRC). The city is located on the ...

with Naval Advance Base Unit 13. With the war over, the ongoing discharge men eligible left only enough for one CB and the two CB Specials. The men were consolidated in the 96th with the other CBs decommissioned. In December the 96th started airfields at Tsingtao and

Chinwangtao Qinhuangdao (; ) is a port city on the coast of China in northern Hebei. It is administratively a prefecture-level city, about east of Beijing, on the Bohai Sea, the innermost gulf of the Yellow Sea. Its population during the 2020 national ...

in support of III Marine Amphibious Corps operations. May 1946 CB III Marine Amphibious Corps was ordered to inactivate the 96th CB on 1 August. The 96th was transferred to the 4th Marines, 1st Marine Division and deactivated from them.

Nuclear tests

Seabees build camera tower on Bikini Atoll

In early 1946 the 53rd NCB was deployed with

Operation Crossroads Operation Crossroads was a pair of nuclear weapon tests conducted by the United States at Bikini Atoll in mid-1946. They were the first nuclear weapon tests since Trinity in July 1945, and the first detonations of nuclear devices since the ...

for the nuclear testing at Bikini Atoll. It was designated Task Unit TU 1.8.6. 53's project list included observation, instrument and communication towers,

radio beacon In navigation, a radio beacon or radiobeacon is a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible light, radio beacons transmit electromagne ...

s, seismic huts, photo reference crosses, general base and recreational facilities, as well as

dredging Dredging is the excavation of material from a water environment. Possible reasons for dredging include improving existing water features; reshaping land and water features to alter drainage, navigability, and commercial use; constructing d ...

the

lagoon A lagoon is a shallow body of water separated from a larger body of water by a narrow landform, such as reefs, barrier islands, barrier peninsulas, or isthmuses. Lagoons are commonly divided into '' coastal lagoons'' (or ''barrier lagoons ...

. In addition, recreational facilities were constructed on Japtan Island for the ships crews of the Operation. The Battalion also assisted the relocation of the natives. They disassembled both the Community center and church for reassembly on

Rongerik Atoll Rongerik Atoll or Rongdrik Atoll ( Marshallese: , ) is a coral atoll of 17 islands in the Pacific Ocean, and is located in the Ralik Chain of the Marshall Islands, approximately east of Bikini Atoll. Its total land area is only , but it enclose ...

. In August the battalion was decommissioned with men transferred to CBD 1156 that was then commissioned on Bikini. The TU 1.8.6 designation transferred to the CBD. CBD 1156 remained for nine days after the second test. UDT 3 was designated TU 1.1.3 for the operation. On 27 April 1946, seven officers and 51 enlisted embarked at CBC Port Hueneme for Bikini. Their assignment was to retrieve water

sample Sample or samples may refer to: Base meaning * Sample (statistics), a subset of a population – complete data set * Sample (signal), a digital discrete sample of a continuous analog signal * Sample (material), a specimen or small quantity of ...

s from

ground zero In relation to nuclear explosions and other large bombs, ground zero (also called surface zero) is the point on the Earth's surface closest to a detonation. In the case of an explosion above the ground, ''ground zero'' is the point on the grou ...

of the Baker blast. In 1948, the displaced bikinians put in a request that a channel to the island Kili where they had been relocated be made. This was given to the Seabee detachment on Kwajelin who requested UDT 3 assist. The 121st CB was decommissioned in December and re-designated CBD 1504. In January 1947 CBs 104 and 105 were reactivated. The 30th NCR was home-ported on Guam composed of CBDs 1501-13 and NCB 103. In 1949, the 103rd was made a Mobile Construction Battalion (MCB) while CBs 104 and 105 were made Amphibious Construction Battalions(ACBs). From 1949 until 1968 CBs were designated MCBs. In 1949, MCB 1 was reactivated at Naval Amphibious Base Little Creek, VA. In June 1950 the NCF totaled a few thousand.

Korean War

The outbreak of the

Korean War {{Infobox military conflict , conflict = Korean War , partof = the Cold War and the Korean conflict , image = Korean War Montage 2.png , image_size = 300px , caption = Clockwise from top:{ ...

led to a call-up of 10,000 from the Seabee Reserve. Seabees landed at Inchon during the assault, installing causeways dealing with enormous tides and enemy fire. Their actions there and elsewheres underscored the necessity of having CBs. During that war the authorized size of a CB was 550 men. When the truce was declared there was no CB demobilization as there had been at the end of World War II. During the Korea, the U.S. realized the need of an air station in the region.

Cubi Point U.S. Naval Air Station Cubi Point was a United States Navy aerial facility located at the edge of Naval Base Subic Bay and abutting the Bataan Peninsula in the Philippines. When the base closed, the air station became the Subic Bay International ...

in the Philippines was selected. Civilian contractors were approached for bids. After seeing the

Zambales Mountains The Zambales Mountains is a mountain range on western Luzon island in the Philippines. The mountains separate Luzon's central plain from the South China Sea. Its most prominent section is known as the Cabusilan Mountain Range composed of Mount ...

and the maze of jungle, they claimed it could not be done. The Navy then turned to the Seabees. The first to arrive was CBD 1802 to do the surveying. MCB 3 arrived on 2 October 1951 to get the project going and was joined by MCB 5 in November. Over the next five years, MCBs 2, 7, 9, 11 and CBD 1803 all contributed to the effort. They leveled a mountain to make way for a nearly runway. NAS Cubi Point turned out to be one of the largest earth-moving projects in the world, equivalent to the construction of the

Panama Canal The Panama Canal ( es, Canal de Panamá, link=no) is an artificial waterway in Panama that connects the Atlantic Ocean with the Pacific Ocean and divides North and South America. The canal cuts across the Isthmus of Panama and is a condui ...

. Seabees there moved of dry fill plus another 15 million that was

hydraulic fill Hydraulic fill is a means of selectively emplacing soil or other materials using a stream of water. It is also a term used to describe the materials thus emplaced. Gravity, coupled with velocity control, is used to effect the selected depositi ...

. The $100 million facility ($ in dollars) was commissioned on 25 July 1956, and comprised an air station and an adjacent pier that was capable of docking the Navy's largest carriers. Seabee Teams The World War II precursor to Seabee teams was the PT Advance base Detachment of the 113th CB. Each man was cross-trained in at least three trades with some qualified as corpsmen and divers. During Vietnam the requirement of being skilled in three trades was continued. The first Seabees referred to as "Seabee Teams" were CBDs 1802 and 1803. They were followed by Detachments Able and Baker. The

U.S. State Department The United States Department of State (DOS), or State Department, is an executive department of the U.S. federal government responsible for the country's foreign policy and relations. Equivalent to the ministry of foreign affairs of other n ...

learned of the teams and concluded they could have a

purpose. They could be U.S. "Good Will Ambassadors" to third world countries to counter the spread of

Communism Communism (from Latin la, communis, lit=common, universal, label=none) is a far-left sociopolitical, philosophical, and economic ideology and current within the socialist movement whose goal is the establishment of a communist society, ...

, a military version of the

Peace Corps The Peace Corps is an independent agency and program of the United States government that trains and deploys volunteers to provide international development assistance. It was established in March 1961 by an executive order of President John ...

. These 13-man teams would construct schools, drill wells or build clinics creating a positive image for the U.S. They were utilized by the

United States Agency for International Development The United States Agency for International Development (USAID) is an independent agency of the U.S. federal government that is primarily responsible for administering civilian foreign aid and development assistance. With a budget of over $27 b ...

and were in S.E. Asia by the mid-1950s. Then in the early sixties, the

U.S. Army Special Forces The United States Army Special Forces (SF), colloquially known as the "Green Berets" due to their distinctive service headgear, are a special operations force of the United States Army. The Green Berets are geared towards nine doctrinal mi ...

were being sent into rural areas of South Vietnam to develop a self-defense force to counter the Communist threat and making use of the Seabee teams at these same places made sense to the

CIA The Central Intelligence Agency (CIA ), known informally as the Agency and historically as the Company, is a civilian foreign intelligence service of the federal government of the United States, officially tasked with gathering, processing, ...

. To start, twelve "Seabee teams, with Secret Clearances, were sent with the Army's Special Forces in the CIA funded Civilian Irregular Defense Group program (CIDG)"Commander Naval Construction Battalion U.S. Pacific Fleet, Tân Sơn Nhất, Republic of Vietnam, Completion Report 1963–1972.
/ref> in the years 1963–1965. By 1965 the U.S. Army had enough engineers in theater to end Seabee involvement with Special Forces. At first teams were called Seabee Technical Assistance Teams (STAT) and were restricted to two in theater at a time. Teams after STAT 1104 were renamed Seabee Teams and by 1969 there were 17 in theater. As a military force Seabee Teams received many awards for heroism. Teams were sent to other nations as well. The Royal Thai government requested STATs in 1963 and ever since the Seabees have continued to deploy teams. Construction Civic Action Details or CCAD CCADs or "See-Kads" are larger civic action units of 20–25 Seabees with the same purpose as Seabee Teams. The CCAD designation is not found in the record prior to 2013.

Camp David

Camp David is officially known as

Naval Support Facility Thurmont Camp David is the country retreat for the president of the United States of America. It is located in the wooded hills of Catoctin Mountain Park, in Frederick County, Maryland, near the towns of Thurmont and Emmitsburg, about north-northwest ...

, as it is technically a military installation. The base is staffed by the CEC, Seabees, and Marines. "In the early 1950s, Seabee BUs, UTs and CEs took over routine maintenance of the base and additional rates were added for administrative functions. Today Seabees still man the base public works and see that the grounds are in an impeccable condition." "Selectees undergo a single scope background investigation to determine if they qualify for a Top Secret Sensitive Yankee White (YW) clearance. All personnel in Presidential support activities are required a "Yankee White" security clearance. The tour lasts 36 months." When the base has a larger construction project a Construction Battalion from the fleet can be tasked. NMCBs 5 and

133 133 may refer to: *133 (number) *AD 133 *133 BC *133 (song) 133 may refer to: *133 (number) *AD 133 *133 BC __NOTOC__ Year 133 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Scaevola ...

have drawn these assignments.

Antarctica: Science

Operation Highjump In December 1946, 166 Seabees sailed from Port Hueneme on the

USS Yancey USS ''Yancey'' (AKA-93/LKA-93) was an built by the Moore Dry Dock Company of Oakland, California for the United States Navy during World War II. The ship was named in honor of Yancey County, North Carolina. ''Yancey''s keel was laid in May 1 ...

and

USS Merrick USS ''Merrick'' (AKA-97/LKA-97) was an named after Merrick County, Nebraska. ''Merrick'' (AKA–97) was laid down as Maritime Commission hull 219, on 19 October 1944 by Federal Shipbuilding and Drydock Company, Kearny, New Jersey, launched on 2 ...

assigned to

. They were part of Admiral Richard E. Byrd's Antarctic expedition. The U.S. Navy was in charge with "Classified" orders "to do all it could to establish a basis for a (U.S.) land claim in Antarctica"."Operation Highjump" ''Air & Space Magazine'', July 2007, Smithsonian Institution, Washington, DC
/ref> The Navy sent the Seabees to do the job starting with the construction of

Little America (exploration base) Little America was a series of Antarctic exploration bases from 1929 to 1958, located on the Ross Ice Shelf, south of the Bay of Whales. The coordinates are approximate. Little America I The first base in the series was established in January ...

IV as well as a runway for aerial mapping flights. This Operation was vastly larger than

IGY Immunoglobulin Y (abbreviated as IgY) is a type of immunoglobulin which is the major antibody in bird, reptile, and lungfish blood. It is also found in high concentrations in chicken egg yolk. As with the other immunoglobulins, IgY is a class ...

that followed. Operation Deep Freeze MCB 1 Sled train departing Little America for traverse to Byrd Station

In 1955, Seabees were assigned to

making Antarctica an annual deployment site. Their task was the construction and maintenance of scientific bases for the

National Science Foundation The National Science Foundation (NSF) is an independent agency of the United States government that supports fundamental research and education in all the non-medical fields of science and engineering. Its medical counterpart is the National ...

. The first "wintering over" crew included 200 Seabees. They cleared an ice runway at

Mcmurdo Vice-Admiral Archibald McMurdo (24 September 1812 – 11 December 1875) was a Scottish naval officer and polar explorer after whom Antarctica's McMurdo Sound, McMurdo Station, McMurdo Ice Shelf, McMurdo Dry Valleys and McMurdo–South Pole Hig ...

for the advance party of Deep Freeze II to fly to South Pole Station. MCB 1 was assigned for Deep Freeze II. Antarctica added to the Seabee's list of accomplishments: *Tractor train traverses covering hundreds of miles. *Bases built:

McMurdo Station McMurdo Station is a United States Antarctic research station on the south tip of Ross Island, which is in the New Zealand-claimed Ross Dependency on the shore of McMurdo Sound in Antarctica. It is operated by the United States through the ...

, South Pole Station,

Byrd Station The Byrd Station is a former research station established by the United States during the International Geophysical Year by U.S. Navy Seabees during Operation Deep Freeze II in West Antarctica. History A joint Army, Navy, Air Force, and Marin ...

, Palmer Station, Siple Station,

Ellsworth Station Ellsworth Scientific Station ( es, Estación Científica Ellsworth, or simply ''Estación Ellsworth'' or ''Base Ellsworth'') was a permanent, all year-round originally American, then Argentine Antarctic scientific research station named after Ame ...

, Brockton Station, Eights Station,

Plateau Station Plateau Station is an inactive American research and South Pole—Queen Maud Land Traverse support base on the central Antarctic Plateau. Construction on the site started on December 13, 1965, and the first traverse team (named SPQML II) arriv ...

Hallett Station Cape Hallett is a snow-free area ( Antarctic oasis) on the northern tip of the Hallett Peninsula on the Ross Sea coast of Victoria Land, East Antarctica. Cape Adare lies to the north. History In 1956, during Operation Deep Freeze II, was dama ...

, and Little America IV and Little America V *MCB 1s construction of a

nuclear power plant A nuclear power plant (NPP) is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power stations, heat is used to generate steam that drives a steam turbine connected to a generator that produces ...

which got them a Navy Unit Commendation. *NMCB 71s construction of a

Buckminster Fuller Richard Buckminster Fuller (; July 12, 1895 – July 1, 1983) was an American architect, systems theorist, writer, designer, inventor, philosopher, and futurist. He styled his name as R. Buckminster Fuller in his writings, publishing ...

Geodesic dome A geodesic dome is a hemispherical thin-shell structure (lattice-shell) based on a geodesic polyhedron. The triangular elements of the dome are structurally rigid and distribute the structural stress throughout the structure, making geodesic do ...

at So. Pole Station. It became a symbolic icon of the United States Antarctic Research Program (USARP). see Notes

Vietnam War

Seabees were in Vietnam twice in the 1950s. First in June 1954, as elements of Operation Passage to Freedom and then two years later to map and survey the nation's roads. Seabee teams 501 and 502 arrived January 1963 and are recorded as the first Seabees of the

. They went to Dam Pau and

Tri Ton * Tri- is a numerical prefix meaning three. Tri or TRI may also refer to: Places * Tri-Cities Regional Airport, Tennessee, US, IATA code TRI * Triangulum constellation, astronomical abbreviation Tri People *Tri, Former nickname for wrestler Trip ...

to build Special Forces camps. In 1964, ACB 1 was the first CB in the theatre. In 1965, Marines and Seabees made an amphibious landing at Chu Lai and entire Naval Construction Regiments followed.Seabees in Action in Vietnam, Naval Facilities Engineering Command, U.S. GPO 1968 O-323-015. Seabees supported the Marines at Khe Sanh and Chu Lai combat bases in addition to building numerous aircraft-support facilities, roads, and bridges. Every mile of road improved equated to 100' of bridgedeck constructed. They also worked civic action projects throughout the country. In June 1965, Construction Mechanic 3rd Class

Marvin G. Shields Marvin Glenn Shields (December 30, 1939 – June 10, 1965) was the first and only United States Navy Seabee to be awarded the Medal of Honor. He was also the first sailor to receive the Medal of Honor for heroism above and beyond the call of ...

of Seabee Team 1104 was at the

Battle of Dong Xoai A battle is an occurrence of combat in warfare between opposing military units of any number or size. A war usually consists of multiple battles. In general, a battle is a military engagement that is well defined in duration, area, and forc ...

. He was posthumously awarded the

Medal of Honor The Medal of Honor (MOH) is the United States Armed Forces' highest military decoration and is awarded to recognize American soldiers, sailors, marines, airmen, guardians and coast guardsmen who have distinguished themselves by acts of val ...

and is the only Seabee to receive the award. Seabee Teams were deployed throughout the War. They typically built schools, clinics, or drilled wells. In 1966, Seabees repaired the airfield at Khe Sahn laying aluminum matting covering 3,900'x60' in four days.

General Westmoreland William Childs Westmoreland (March 26, 1914 – July 18, 2005) was a United States Army general, most notably commander of United States forces during the Vietnam War from 1964 to 1968. He served as Chief of Staff of the United States Army from ...

"called it one of the most outstanding military engineering feats of the war." MCB 4 had a det at

whose actions were a near repeat of Dong Xoai. In 1968, the Marine Corps requested that the Navy make a change. The Marines were using "MCB" for Marine Corps Base while the Navy was using "MCB" for Mobile Construction Battalion, it was causing confusion in logistics. The Navy agreed and added "Naval" to MCB creating the NMCBs that now exist. During that year the 30th NCR had five battalions in the Da Nang area and two at Chu Lai. The 32nd NCR had three battalions tasked near Phu Bai and one at Dong Ha. In May 1968 two reserve battalions RNMCB 12 and 22 were activated, bring the total number of battalions in Vietnam to 21. Both ACBs were in theater as well as CBMUs 301 and 302. In 1968, NMCB 10 drew an atypical Seabee "task" supporting the

101st Airborne The 101st Airborne Division (Air Assault) ("Screaming Eagles") is a light infantry division of the United States Army that specializes in air assault operations. It can plan, coordinate, and execute multiple battalion-size air assault operati ...

. It happened again in 1969 when CBs 10, 40 and 121 sent EOs to Fire base Fury. During 1969 the number of Seabees in theater reached 29,000, from there their draw-down began. The last battalion withdrew late 1971 with the last Seabee teams out a year later. When it was over they had sent 137 Seabee teams, built 15 CB camps, and deployed 22 battalions. CBMU 302 became the largest CB ever at over 1400 men and was homeported at

Cam Rahn Bay Cam Ranh Bay ( vi, Vịnh Cam Ranh) is a deep-water bay in Vietnam in Khánh Hòa Province. It is located at an inlet of the South China Sea situated on the southeastern coast of Vietnam, between Phan Rang and Nha Trang, approximately 290 kil ...

. On 23 April 1975 it was announced that U.S. involvement in Vietnam was over. That day CB 4 started construction of a temporary camp for Operation New Life on Guam. In seven days 2,000 squad tents were erected and numbered 3,500 when done. During Vietnam the Seabees had a few uniform variations. One was the stenciling of unit numbers across the back of the field jacket M-65. Another was the collar and cover devices for enlisted E4-E6. The Navy authorized that the "crow" be replaced by the rating insignia of each trade. Nametags were another, they started out white with a multicolored seabee. In 1968, the USMC OD green pattern was copied. The NAVCATs became the only Seabees to ever be authorized to wear a shoulder patch. NAVCATs Naval Construction Action Teams CBMU 302 had 23 NAVCATS(Naval Construction Action Teams) total with 15 the most active at one time. Teams were numbered 1-23. They were Vice Admiral Elmo Zumwalt's expansion of the Seabee Team concept. He submitted it in November 1968 to General Creighton Abrams commander of

Military Assistance Command, Vietnam U.S. Military Assistance Command, Vietnam (MACV) was a joint-service command of the United States Department of Defense. MACV was created on 8 February 1962, in response to the increase in United States military assistance to South Vietnam. MACV ...

. Agent Orange Many Seabees were exposed to the

defoliant A defoliant is any herbicidal chemical sprayed or dusted on plants to cause their leaves to fall off. Defoliants are widely used for the selective removal of weeds in managing croplands and lawns. Worldwide use of defoliants, along with the ...

herbicide Herbicides (, ), also commonly known as weedkillers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page f ...

while in Vietnam. NCBC Gulfport was the largest storage depot in the United States for

agent orange Agent Orange is a chemical herbicide and defoliant, one of the "tactical use" Rainbow Herbicides. It was used by the U.S. military as part of its herbicidal warfare program, Operation Ranch Hand, during the Vietnam War from 1961 to 1971. It ...

. From there it was shipped to Vietnam.Agent Orange clean at Navy Seabee base is the focus at public meeting, reported by Natalie Campen, WLOX TV, Gulfport, MS, July 9, 2013 at 3:04 PM CDT
/ref> In 1968, the NCBC received 68,000

barrel A barrel or cask is a hollow cylindrical container with a bulging center, longer than it is wide. They are traditionally made of wooden staves and bound by wooden or metal hoops. The word vat is often used for large containers for liquids, ...

s to forward.''The History, Use, Disposition and Environmental Fate of Agent Orange'', Chapt 7: Monitoring Studies of Former Agent Orange Storage Sites in Mississippi and Johnston Island, Alvin L. Young, Springer Publishing, 2008
/ref> Long term barrel storage began in 1969. That lasted until 1977. The site covered 30 acres and was still being cleaned up in 2013.

Space race: NASA/Tektite I

In 1960, a MCB 10 detachment built a Project Mercury telemetry and Ground station, ground instrumentation station on Canton island. On 28 January 1969 a detachment of 50 men from Amphibious Construction Battalion 2 plus 17 Seabee divers began installation of the Tektite habitat in Great Lameshur Bay at Lameshur, U.S. Virgin Islands. The Tektite program was funded by NASA and was the first scientists-in-the-sea program sponsored by the U.S. government. The Seabees also constructed a 12-hut base camp at Viers that is used today as the Virgin Islands Environmental Resource Station. The project was a by product of the space race. It caused the U.S. Navy to realize the need for a permanent Underwater Construction capability that led to the formation the Seabee Underwater Construction Teams". At present NASA is working on the Human mission to Mars, Moon to Mars program. In 2015, ACB 1 was involved in moving the Orion's Boilerplate (spacecraft), Boilerplate Test Article (BTA). ACB 1 was tasked in August 2019 in a test recovery exercise of the Orion spacecraft. ACB 2 was put through the same task a year later in August 2020.

CIA and Naval Intelligence/Communication support

* After the Seabees left Camp Peary the CIA moved into the base and now refer to it as "the Farm". * During World War II NAS Tanapag, Saipan was a "major propaganda site of the Office of War Information" (OWI). In 1947, CBD 1510 began maintaining NAS Tanapag for the NTTU (Naval Technical Training Unit).Cold War covert activities on Saipan, elsewhere in the region, Posted on Dec 21 2004, Saipan Tribune
/ref> In 1948, CBD 1510's men were transferred to CBD 1504 when it was replacing CB 121 as island Public Works. That year the CIA created the NTTU as a "cover" and made access highly restricted to the base. The CIA station had Capitol Hill, Saipan, Capitol Hill constructed to administer its operations at a cost of $28 million. The station covered the northern half of Saipan including, East Field (Saipan), Kagman Field, Marpi Point Field, and the four radio towers. "Brig. Gen. Edward G. Lansdale, Pentagon expert on guerrilla warfare, shared with Gen. Maxwell D. Taylor, President Kennedy's military adviser, on "Resources for Unconventional Warfare in SE. Asia."....that the "CIA maintains a field training station on the island of Saipan ... the installation is under Navy cover and is known as the Naval Technical Training Unit. The primary mission of the Saipan Training Station is to provide physical facilities and competent instructor personnel to fulfill a variety of training requirements including Espionage, intelligence tradecraft, communications, counter-intelligence and psychological warfare techniques. Training is performed in support of CIA activities conducted throughout the Far East area." The Seabees cease listing the Public Works assignments at NAS Tanapag in 1953 while the CIA remained until 1962. However, MCB 9 deployed to Saipan in 1954 with one of their projects being the up-grading of the Public Works shops. MCB 10 Det Bravo deployed to Saipan from July 1957 until February 1958 with projects unlisted.

* A year before the Bay of pigs and Cuban Missile Crisis the CIA took a "top secret" urgent/immediate project to the Seabees.Radio Swan: Seabees Part of Cold War History, Seabee Magazine online, Kenneth Van Belkum, Cmdr. CEC (retired), OIC of Det. Tango, Seabee Museum, Port Hueneme, CA
/ref> The agency wanted two 220' radio towers with a supporting airstrip, dock, and quonsets erected on Swan Islands, Honduras, Swan Island, built asap, with no construction plans for the Seabees. The station would be independent-self sufficient. Det Tango of MCB 6 was given the project. LSTs 1046 and 1056 delivered men and materials from CBC Quonset Point. The Seabees had the CIA's "Radio Swan" on the air in short order. Naval Intelligence: NAVFACs The Navy built 22 Naval Facilities (NAVFACs) for its Sound Surveillance System (SOSUS) to track Soviet submarines. They were in service 1954–79 with Seabees staffing all the Public works. In the 1980s the number of tracking stations was halved with the advent of the Integrated Underwater Surveillance System (IUSS). The NAVFACs were decommissioned by further advances in technology, the end of the Cold War and disclosures by John Anthony Walker, John Walker to the Soviets. The Seabees have also been tasked building Naval Communication facilities. One at Nea Makri Greece was built by MCB 6 in 1962 and upgraded by NMCB 133. United States Naval Communications Station Sidi Yahya El Gharb, Naval Comm Station Sidi Yahya was first built in World War II another is NavCommSta Guam. It started out on the island as the Joint Communications Agency (JCA) in 1945.

Naval Support Unit: Department of State/Embassy security

In 1964, at the height of the Cold War, Seabees were assigned to the State Department because listening devices were found in the Embassy of the United States in Moscow. Those initial Seabees were "Naval Mobile Construction Battalion FOUR, Detachment November". The U.S. had just constructed a new embassy in Warsaw. After what had been found in Moscow Seabees were dispatched and found many "bugs" there also. This led to the creation of the Naval Support Unit in 1966 as well as the decision to make it permanent two years later. That year William Darrah, a Seabee of the support unit, is credited with saving the U.S. Embassy in Prague, Czechoslovakia from a potentially disastrous fire. In 1986, "as a result of reciprocal expulsions ordered by Washington and Moscow" Seabees were sent to "Moscow and Leningrad to help keep the embassy and the consulate functioning". The Support Unit has a limited number of special billets for select NCOs, E-5 and above. These Seabees are assigned to the

and attached to Diplomatic Security. Those chosen can be assigned to the Regional Security Officer of a specific embassy or be part of a team traveling from one embassy to the next. Duties include the installation of alarm systems, CCTV cameras, electromagnetic locks, safes, vehicle barriers, and securing compounds. They can also assist with the security engineering in sweeping embassies (electronic counter-intelligence). They are tasked with new construction or renovations in security sensitive areas and supervise private contractors in non-sensitive areas. Due to Diplomatic protocol the Support Unit is required to wear civilian clothes most of the time they are on duty and receive a supplemental clothing allowance for this. The information regarding this assignment is very scant, but State Department records in 1985 indicate department security had 800 employees, plus 1,200 Marines and 115 Seabees. That Seabee number is roughly the same today.

Cold War winds down

As the

wound down, new challenges and changes came for the Seabees starting with the increased incidence of terrorism. This was in addition to ongoing Seabee support missions for USN/USMC bases worldwide. Cold War Facilities still required support, like the UGM-27 Polaris, Polaris and UGM-73 Poseidon, Poseidon submarines at Holy Loch, Naval Station Rota, Spain, Rota. In 1971, the Seabees began the huge project on Naval Support Facility Diego Garcia, Diego GarciaSeabee History: After Vietnam, Published: 16 Apr 2015, NHHC, Official U.S. Navy web site
/ref> in the Indian Ocean. It was completed in 1987 at a cost of $200 million. With the extended construction timeline, it is difficult to inflation-adjust that cost into today's dollars. The complex accommodates the Navy's largest ships and cargo planes. The base served as a staging facility for Operations Desert Shield and

. Additionally, Seabees were also tasked upgrading and expanding Naval Air Station Sigonella, Sicily for the United States Sixth Fleet. In 1983, a truck bomb demolished the 1983 Beirut barracks bombings, Marine's barracks in Beirut, Lebanon. From the Beirut International Airport Druze militia artillery harassed the Marines. NMCB-1 was in Rota and sent its AirDet to construct bunkers for the Marines. EO2 Kirt May became the first Seabee post-Vietnam to receive a Purple Heart while on this mission. CN Carmella Jones became the first female Seabee when she cross-rated to Equipment Operator during the summer of 1972.

International terrorism

The Cold war did not end until 1991 and 9/11 was further off yet, but SW2 Robert Stethem was executed by the Lebanese Shia Islam, Shia militia Hezbollah when they hijacked TWA Flight 847 in 1985. Stethem was a Navy diver (United States Navy), diver in UCT 1. The Navy named in his honor. On 24 August 2010, during a shipboard ceremony, Stethem was posthumously honored to the rank of Steelworker (United States Navy), Master Chief Constructionman (CUCM) by the Master Chief Petty Officer of the Navy and given the Prisoner of War Medal.

Persian Gulf War

Over 5,000 Seabees served in the Gulf War. In August 1990 the 1st Marine Expeditionary Force (I MEF) was assigned NMCBs 4, 5, 7, and 40.Seabee History: After Vietnam, Apr 2015, NHHC, Official USN web site
/ref> The first Seabees in theater were a Det from ABC 1, followed by a Det from ACB 2 and then CBUs 411 and 415. Mid September Air-Dets from the four battalions deployed to construct air fields for Marine Air Groups (MAG) 11, 13, 16, and 25 of the 3rd Marine Air Wing. NMCB 7 was the first Battalion to arrive. Camp Nomad was a NMBC-74 project at Ras Al Mishab for MAG 26. Camps were constructed for both the 1st and 2nd Marine Divisions as well as Hq complexes for MEF I and II. In Saudi Arabia, Seabees built numerous camps, galleys, runways, aprons, helicopter, helo zones, plus two 500-bed Fleet Hospitals near Jubail, Al-Jubayl. The 3rd NCR was activated to provide a command echelon. NMCBs 24 and 74 also deployed in support of the Marines.

Iraq, Afghanistan, and the War on Terror

Seabees deployed in both initial invasions of the War in Afghanistan (2001-2021), Afghanistan War and War in Iraq, Iraq War. All active and reserve NMCBs and NCRs were deployed to building to work on civil infrastructure.Seabee History: The US Navy in Operation Enduring Freedom, 2001–2002: 18 Aug. 2017, NHHC, Official U.S. Navy web site
/ref> One of the most visible tasks assigned to the NCF was the removal of statues of Saddam Hussein in Baghdad. In Afghanistan, the Seabees' main task was the construction of multiple forward operating bases. NMCB 133 deployed to FOB Camp Rhino and help build Kandahar Airfield where a detention facility was constructed as well. O Since 2002, Seabees have provided civic action support in the Philippines, most notably near Abu Sayyaf's jungle training area in the southern Philippines. Seabees work with Army, Marines, and Air Force under the Joint Special Operations Task Forcem -Philippines. Seabees have supported the War on Terror ever since the invasion with numerous deployments over the years.

Disaster Relief and Recovery

* Hurricane Camille hit NCBC Gulfport, Mississippi, NMCB-121 was in homeport and was tasked with base cleanup, rescue, and community outreach. * Cyclone Ofa in 1990 NMCB 133 sent a det to American Samoa to aid the recovery. * 1994 Northridge earthquake, Seabees supported the disaster recovery. * Hurricane Andrew in 1992, Seabees provided disaster recovery to Homestead, Florida. * Unified Task Force, Operation Restore Hope In 1992–1993 two battalions were sent for the humanitarian efforts in Somalia. * Operation Sea Signal 1994 Seabees provided assistance to the Haitian Relief effort at Guantanamo Bay Naval Base. * Implementation Force, Operation Joint Endeavor In Dec. 1995, Seabees were in Croatia supporting the peacekeeping in Sarajevo, Bosnia and Herzegovina. NMCB 40 was tasked to the U.S. Army 1st Infantry Div. for dismantling FOBs during the Implementation Force, IFOR/Stabilisation Force in Bosnia and Herzegovina, SFOR phase. * Hurricane Georges Seabees deployed to the Caribbean with damage assessment teams, generators and water trucks providing disaster relief. *Hurricane Mitch 1998 Seabees deployed to Honduras with Joint Task Force Bravo. They did road and bridge repair, debris cleanup, and erected camps. For NMCB 7, it was on their second humanitarian mission of the deployment. * Hurricane Ivan NMCBs 1 & 74 deployed in September 2004 to the repair Naval Air Station Pensacola. They cleared debris, repaired roads, erected tents, and provided general support. * Typhoon Nanmadol (2004) NMCB 7 provided disaster relief. * 2004 Indian Ocean earthquake and tsunami NMCBs 7, 40, and UCT 2 provided disaster relief. * Joint Task Force Katrina 2005. Seabees from NMCBs 1, 7, 18, 40 and 133 plus ACB 2 and CBMUs 202 and 303 and UCT 1 were tasked the reconstruction of CBC Gulfport and the recovery of the Gulf Coast of the United States, Gulf Coast * 2010 Haiti earthquake NMCB 7 provided construction support and disaster relief with UCT 1, ACB-2 and Army Engineers. * April 2011 Miyagi earthquake Seabees from NMCB-133 and UCT 2 deployed to Japan as part of the relief effort. * Hurricane Sandy NMCB 11 Air Det deployed to support disaster recovery in New Jersey and New York. NMCB 5 assisted disaster relief throughout the Sandy Hook area.

Naval Construction Force (NCF)

At present, there are six active-duty Naval Mobile Construction Battalions (NMCBs) in the United States Navy, split between the Pacific Fleet and the Atlantic Fleet. 30th Naval Construction Regiment is located on Guam. Naval Construction Battalion Center Port Hueneme Ca. is homeport to the Regiment's battalions. * Naval Mobile Construction Battalion 3 * Naval Mobile Construction Battalion 4 * Naval Mobile Construction Battalion 5 22nd Naval Construction Regiment is stationed at Naval Construction Battalion Center (Gulfport, Mississippi) the homeport to the Atlantic fleet CBs. * Naval Mobile Construction Battalion 1 * Naval Mobile Construction Battalion 11 * Naval Mobile Construction Battalion 133 NCF Reserve From the 1960s through 1991, reserve battalions were designated as "Reserve Naval Mobile Construction Battalions" (RNMCBs). After 1991 "Reserve" was dropped with the integration of reserve units within the NCF making all battalions NMCBs * Naval Mobile Construction Battalion 14, HQ Gulfport, MS. detachments in five states and Puerto Rico. * Naval Mobile Construction Battalion 18, HQ Port Hueneme, CA., detachments in six states and Guam. * Naval Mobile Construction Battalion 22, HQ Port Hueneme, CA. detachments in five states. * Naval Mobile Construction Battalion 25, HQ Port Hueneme, CA. detachments in six states. * Naval Mobile Construction Battalion 27, HQ Gulfport, MS. detachments in seven states. Detachment: A construction crew that is "detached" from the battalion's "main body" deployment site. The size is determined by the project scale and timeline. Battalion: The battalion is the basic NCF unit with a HQ Company plus four Construction Companies: A, B, C, & D. CBs are organized to function as independent self sufficient units. Regiment: Naval Construction Regiments (NCRs) provide a higher echelon command to three or four CBs operating on close proximity. Naval Construction Groups 1 and 2: In 2013, Seabee Readiness Groups (SRGs) were decommissioned, and re-organized as NCG-1 and NCG-2. They are regimental-level command groups tasked with administrative and operational control of CBs, as well as conducting pre deployment training for all assigned units. NCG-2 is based at CBC Gulfport while NCG-1 is at CBC Port Hueneme. Seabee Engineer Reconnaissance Team (SERTs) SERTs are the Marine expeditionary unit (special operations capable), Special operations capable element of the NCF developed by the First Naval Construction Division (1st NCD) in Operation Iraqi Freedom. They are intended to provide engineering assessments in the field in support of the United States Marine Corps Reconnaissance Battalions. A team has two CEC officers and eight enlisted Seabees, augmented by additional personnel as needed. A team has three elements: liaison, security, and reconnaissance. The liaison (LNO) element has an officer and two communications specialists responsible for communicating the assessments and intelligence. Reconnaissance has the other officer, who is the Officer-in-Charge (OIC), a Builder (US Navy), BU or Steelworker (US Navy), SW chief petty officer, cpo with bridge construction experience. The team has a corpsman or medically trained member, the remainder are selected for being the most qualified in their trade. All are required to have the Seabee Warfare pin. In 2013, 1st Naval Construction Division along with SERT's were decommissioned. Today, UCTs performance demonstrate the SERT concept for NECC.

Seabees outside the NCF

Amphibious Construction Battalions (PHIBCBs) ACBs (or PHIBCB) were preceded by the pontoon assembly CBs formed during World War II. On 31 October 1950, MCBs 104 and 105 were re-designated ACB 1 and ACB 2, and assigned to Naval Beach Groups. ACBs report to Surface warfare, surface U.S. Navy type commands#Commander, Naval Surface Forces, TYCOMs. Additionally, in an ACB half the enlisted are a construction rate while the other half are fleet. Construction Battalion Maintenance Units When during World War II these units had 1/4 the personnel of a CB. Their task was to assume maintenance of bases once CBs had completed construction. Today, CBMU's provide public works support at Naval Support Activities, Forward Operating Bases, and Fleet Hospital/Expeditionary Medical Facilities during wartime or contingency operations for a Marine Expeditionary Force (MEF), Marine Expeditionary Group (MEG), or NSW. They also provide disaster recovery support to Naval Regional Commanders in Contiguous United States, CONUS. * CBMU 202 Naval Base Little Creek, VA **det Jacksonville * CBMU 303 Navy Expeditionary Combat Force, Naval Base San Diego, Ca. **det Port Hueneme **det Pearl Harbor NAVFAC Engineering & Expeditionary Warfare Center Ocean Facilities Department.Ocealoopn Facilities Department, NAVFAC Engineering & Expeditionary Warfare Center, Washington Navy Yard, DC.
/ref> Gives support to the Fleet through the support of Underwater Construction Teams. UCTs deploy worldwide to conduct underwater construction, inspection, repair, and underwater demolition. Underwater Construction Teams (UCT) UCTs deploy worldwide tasked with underwater construction, inspections, repairs, and demolition operations. They can support a Fleet Marine Force Amphibious warfare, amphibious operation or provide combat service support ashore. UCT1 is home ported at Little Creek, Virginia, while UCT2 is at Port Hueneme, California.U.S. Navy Diving, Lesson N2b.v2, United States Naval Academy, Spring 2012, Seabee Diver/CEC After basic UCT training a diver is qualified as a 2nd Class Diver. Training is 26 weeks at the Dive school at Panama City, Florida. It includes a tactical training phase for advanced combat and demolitions skills. The training qualifies divers as Underwater Construction Technicians skilled in: seafloor excavation, hydrographic surveys, search and recovery, engineering reconnaissance, and precision demolitions. Senior NCOs are schooled for their supervisory positions whether construction or demolition. UCT divers can apply for selection to support the Naval Special Warfare Development Group. Public Works: U.S. Naval Bases These units have CEC officers leading them and enlisted Seabees for the various crews. About one-third of new Seabees are assigned to

Departments (PWD) at naval installations both within the United States and overseas. While stationed at a Public Works Department, a Seabee can get specialized training and experience in multiple facets of their rating. Many bases have civilians that augment Public Works, but the department is a military operation. Combat Service Support Detachments (CSSD) / Naval Special Warfare (NSW) The Seabee detachments have several hundred supporting Naval Special Warfare (NSW) units based out of Coronado, CA, and Virginia Beach, VA. Field support can include camp construction, camp and vehicle maintenance, power generation, transportation logistics, and water purification. The assignment requires additional training in first aid, small arms, driving, specialized equipment, and qualifying as Expeditionary Warfare Specialists. With that qualification a Seabee can be classified as 5306 – Naval Special Warfare (Combat Service Support) or 5307 – Naval Special Warfare (Combat Support). They also can apply for selection to support the Naval Special Warfare Development Group.

Training and Rates

M60 instruction at Camp Lejeune for MCB 71

Trainees begin "A" School (trade school) upon completion of Recruit Training Command, Great Lakes, Illinois, boot: 4 weeks classroom, 8 weeks hands-on. From "A" School, trainees most often report to a NMCB or ACB. There recruits go through four-weeks of Expeditionary Combat Skills (ECS) which is also required for those who report to a Navy Expeditionary Combat Command. ECS is basic training in: map reading, combat first aid, recon, and other combat-related skills. Half of each course is spent on basic marksmanship to qualify with an M16 rifle#M16A3, M16 rifle and the Beretta M9, M9 service pistol. Those posted to Alfa Company of a NMCB may be assigned to a crew-served weapon: Mk 19 grenade launcher, MK 19 40mm grenade launcher, the M2 Browning, .50-caliber machine gun, or the M240 machine gun. Many reserve units still field the M60 machine gun. Seabees were last U.S. military to wear the U.S. Woodland camouflage uniform or the Desert Camouflage Uniform. They now have the Navy Working Uniform NWU Type III and use All-purpose Lightweight Individual Carrying Equipment, ALICE field gear. Some units, with the Marines, will use USMC-issue Improved Load Bearing Equipment (ILBE). Current rates: The current ratings were adopted by the Navy in 1948. * BU : Builder (United States Navy), Builder * CE : Construction electrician (United States Navy), Construction Electrician * CM : Construction mechanic (United States Navy), Construction Mechanic * EA : Engineering aide * EO : Equipment operator * SW : Steelworker (United States Navy), Steelworker * UT : Utilitiesman (United States Navy), Utilitiesman The Seabee "constructionman" ranks of E-1 through E-3 are designated by sky-blue stripes on uniforms. The color was adopted in 1899 as a uniform trim color designating the

, but was later given up. Its continued use is a bit of Naval Heritage in the NCF. At Uniformed services pay grades of the United States#Enlisted pay grades, paygrade E-8, the Builder, Steelworker, and Engineering Aid rates combine into a single rate: Senior Chief Constructionman (CUCS). Before NAVADMIN 054/21, at the E-9 paygrade they were referred to as a Master Chief Constructionman (CUCM). Before NAVADMIN 054/21, the remaining Seabee rates combined only at the E-9 paygrade: * Master Chief Equipmentman (EQCM) for Equipment Operator and Construction Mechanic. * Master Chief Utilitiesman (UCCM) for Construction Electrician and Utilitiesman. Per NAVADMIN 054/21: Constructionman Master Chief (CUCM), Equipmentman Master Chief (EQCM) and Utilities Constructionman Master Chief (UCCM) renamed Seabee Master Chief (CBCM). Those Master Chiefs already in CUCM, EQCM or UCCM ratings were to be automatically converted to CBCM on 15 March 2021, but current source ratings badges were to be retained. Navy diver (United States Navy), Diver is a qualification that the various rates can obtain with three grades: Basic Underwater Construction Technician/ NEC 5932 (2nd Class Diver), Advanced Underwater Construction Technician/ NEC 5931 (1st Class Diver), and Master Underwater Construction Technician/ NEC 5933 (Master diver). Seabee divers are attached to five principal commands outside the NCF: * UCT ONE, Little Creek, VA.U.S. Navy Diving, Lesson N2b.v2, United States Naval Academy, Spring 2012, Seabee Diver/CEC
/ref> * UCT TWO, Port Hueneme, CA. * Naval Facilities Engineering Service Center (NFESC) that has detachments in Port Hueneme, CA, and in the Washington Navy Yard, DC. These are CEC officer billets only. Those at Port Hueneme are with the highly technical NFESC "Dive Locker Team". * United States Navy systems commands, Navy System Commands, e.g., NAVSEA or NAVAIR. These are CEC officer billets only. * NEDU/NDSTC (Navy Experimental Diving Unit Navy Diving & Salvage Training Center)

The "Seabee" and Unit insignias

On 1 March 1942 the RADM Moreell recommended that an insignia be created to promote ''esprit de corps'' in the new CBs to ID their equipment as the Air corps did to ID squadrons. It was not intended for uniforms. Frank J. Iafrate, a civilian file clerk at Quonset Point Advance Naval Base, Davisville, Rhode Island, who created the original "Disney Style" Seabee. In early 1942 his design was sent to RADM Moreell who made a single request. That the Seabee being set inside a letter Q, for Quonset Point, be changed to a hawser rope and it would be officially adopted. The Seabees had a second Logo. It was of a shirtless constructionman holding a sledge hammer with a rifle strapped across his back standing upon the words "Construimus Batuimus USN". The figure was on a shield with a blue field across the top and vertical red and white stripes. A small CEC logo is left of the figure and a small anchor is to the right. This logo was incorporated into many CB Unit insignias. During World War II, artists working for The Walt Disney Company, Disney Insignia Department designed logos for about ten Seabee units including the: 60th NCB, 78th NCB 112th NCB, and the 133rd NCB. There are two Disney published Seabee logos that are not identified with any unit. The end of World War II brought the decommissioning of nearly all of the CBs. They had been in existence less than four years when this happened and the Navy had not created a Historical Branch or Archive for the NCF. So, there was no central archive for Seabee history. As time passed, first with Korea and then Vietnam, Construction Battalions were reactivated with the units having no idea what the World War II insignia had been so they made new ones.

Qualification badges and Unit awards

Navy Seabee Combat Warfare Specialist Insignia

The military qualification badge for the Seabees is known as the Seabee combat warfare specialist insignia (SCW). It was created in 1993 for both officers and enlisted personnel attached to qualifying units: NMCBs, ACBs, UCTs, or NCRs. Its designer, Commander Ross S. Selvidge, CEC, USNR, was the first to wear the insignia. Fleet Marine Force insignia authorized for US Naval personnel

Fleet Marine Force insignia authorized for US Naval personnel

The Fleet Marine Force Insignia or Fleet Marine Force pin (FMF pin), is for USN officers or enlisted trained and qualified to support the USMC. It comes in three classes : enlisted, officer, and chaplain. For requirements, see: Fleet Marine Force Warfare Specialist (EFMFWS) Program per OPNAV Instruction 1414.4B. The Peltier Award is given annually to the "Best of Type" active duty Construction Battalion. It was instituted by Rear Admiral Eugene J. Peltier CEC in 1960. He was Commander of BuDocks 1959–1962.

Seabee barge carriers

There were six Seabee (barge), "Seabee" ships built: the SS ''Cape Mendocino'' (T-AKR-5064), the , and three operated by Lykes Brothers Steamship Company. (the SS Doctor Lykes, the SS Tillie Lykes, and the SS Almeria Lykes). The NCF is the principal user of Seabee barges. Barges are shuttled to and from the mother ship, facilitating the unloading of containerized cargo wherever needed. These ships have an elevator system for lifting the barges out of the water at the stern onto the vessel. Barges, loaded or not are elevated to one of the three decks and then moved forward towards the bow on a track to be stored. The ship can carry 38 barges, 12 each on the lower decks and 14 on the upper. The 38 barges have a total capacity for 160 shipping containers. They have a Draft (hull), draft of 2.5', and measure 97'x35'. Besides the barges, the ship has a fuel storage capacity of nearly 36000 m³(9,510,194 gal.) built in its sides and double hull, allowing it to double as a fuel transport. The ships were purchased by the Military Sealift Command.

Museums

The U.S. Navy Seabee Museum is located outside the main gate of Naval Base Ventura County, Port Hueneme, Ca. In July 2011 the new facility opened with galleries, grand hall, theater, storage, and research areas. The Seabee Heritage Center is the Atlantic Coast Annex of the Seabee Museum in Port Hueneme. It opened in 1995. Exhibits at the Gulfport Annex are provided by the Seabee Museum in Port Hueneme. The Seabee Museum and Memorial Park in Davisville, Rhode Island was opened in the late 1990s. A Fighting Seabee Statue is located there.

Seabees of notable Seabee service

* Admiral

(created the Seabees) * CM3 Marvin Glenn Shields (

) * SW2 Robert Stethem (Seabee diver) * Cdr Blake Wayne Van Leer

Notes

World War II * United States Navy Presidential Unit Citation ribbon

Presidential Unit Citation (US), Presidential Unit Citation USN/USMC **6th CB, 1st Marine Div., Guadalcanal.Naval History and Heritage Command website, Part 2 – Unit Awards, 31 August 2015
/ref> **18th CB, 2nd Marine Div., Tarawa **33rd CB, shore party detachment, 1st Marine Div., Peleliu **73rd CB, shore party detachment, 1st Marine Div., Peleliu **121st CB, 12-man doodlebug landing party, 4th Marine Div., Tinian * United States Army and U

Presidential Unit Citation (US), U.S. Army Distinguished Unit Citation **40th CB, 1st Cavalry Div., Los Negros **78th CB, 12 men, 1st Cavalry Div., Los Negros *WWII U.S.N. CB awards for valor were listed each month in ''All Hands'' along with the rest of the Navy. Marine Corps, Seabees outside the NCF *When the 18th, 19th and 25th CBs were transferred to the Marine Corps they each were reduced by one company plus 1/5th of Hq Co to match the organization of a USMC battalion. B Co from the 25th CB and C Co from the 18th CB were used to form the 53rd CB. The other company was used to form the 121st CB. *Due to Seabees being given advanced rank upon enlistment, enlisted Marines referred to construction battalions as "sergeant's battalions". USMC sergeants do not pull guard duty, so the ranked Seabees would not be assigned. The NCOs of the 18th wore USMC chevrons and not USN "crows" on their uniforms. *USN insignia on USMC issue. *Seabees were shore party for the Marines on Bougainville, Peleliu, Guam, Purata Island, Roi-Namur, Saipan, Iwo Jima, and Okinawa. The Marines deployed them as combat engineers at Cape Gloucester, Tarawa, and Tinian. *The first Marines assigned to a CB were attached to CBD 1010 on Guam. The 2nd Separate Marine Engineer Battalion was next, assigned to the 27th NCR with two former USMC CBs; the 25th and the 53rd. In mid-August 1944 the 1st Separate Marine Engineer Battalion was assigned to the 30th NCR. Prior, 100 Marines were assigned to the 71st CB on Bougainville. NCDUs, Seabees outside the NCF *NCDUs at Normandy: 11, 22–30, 41–46, 127–8, 130-42Report on Naval Combat Demolition Units in Operation "NEPTUNE" as part of Task Force 122, Lt.(jg) H. L. Blackwell Jr., USNR, 5 July 1944.
/ref> *The Joint Army Navy Experimental Testing (JANET) site for beach obstacle removal, Project DM-361, was located at the ex-Seabee base, Camp Bradford after the NCDU program moved. *14 NCDUs were combined to create UDT 9, almost completely Seabees *NCDUs 200 – 216 were combined to create UDT 15.''The Water Is Never Cold'', James Douglas O'Dell, 2000, p. 132, Brassey's, Dulles, VA. * United States Navy Presidential Unit Citation ribbon

Presidential Unit Citation (US), Presidential Unit Citation USN/USMC : Naval Combat Demolition Force O on Omaha beach at Normandy. * Navy Unit Commendation ribbon

Navy Unit Commendation: Naval Combat Demolition Force U on Utah beach at Normandy. UDTs, Seabees outside the NCF *The Naval Special Warfare Command building at the U.S.N. Seal base at Fort Pierce is named for Ltjg. Frank Kaine CEC commander of NCDU 2. *William J. Donovan, General Donovan the head of the OSS approached Douglas MacArthur, General MacArthur and Chester William Nimitz Sr., Admiral Nimitz about using OSS men in the Pacific with Europe invaded. Gen. MacArthur had no interest. Adm. Nimitz looked at Donovan's list and also said no, except he could use the swimmers from the Maritime Unit. He was only interested in them for being swimmers not being OSS. *Seabees outside the NCF, made History of the United States Navy, naval history. Admiral Turner recommended over 60 Silver Stars and over 300 Bronze Stars with Vs for the Seabees and other service members of UDTs 1-7''America's First Frogman'', Elizabeth K. Bush, Naval Institute Press, Annapolis, MD, 2012, Chapt. 7
/ref> That was unpresendented in USN/USMC history. For UDTs 5 and 7 at Tinian and UDTs 3 and 4 at Guam, all officers received a silver stars and all enlisted received bronze stars with Vs.''Naked Warriors'', Cdt. Francis Douglas Fane USNR (Ret.), St. Martin's Press, New York, 1996, pp. 122, 131 Adm. Richard Lansing Conolly, Conolly felt Lt. Crist and Lt. Carberry of UDTs 3 & 4 should have received Navy Crosses at Guam. *many of the men from UDTs 1 and 2 were used to form UDTs 3 and 4. *UDT 3 at formation had 11 CEC, 4 USN, 1 USMC Officers *UDT 7's officers went through "indoctrination" in "Area E" at Camp Peary. Seabee North Slope Oil Exploration 1944 *Seabee Creek was named by CBD 1058 and runs into the Colville River at Umiat, AK. *USN geologists with CBD 1058 discovered the large Aupuk Gas Seep. Cold War: Korea – Seabee Teams *In October 1965 MCB 11 had two Seabee Teams assigned to "Project Demo". The U.S. State Dept. tasked them with de-bugging embassies behind the iron curtain and repair the damage caused by the removal. Cold War: Antarctica *Seabee Heights is a geologic feature of the Transantarctic mountains. It overlooks the Beardmore Glacier Seabee traverse route inland. *Seabee Hook is located near the site of Hallett Station on the Ross sea. Cold War: Vietnam
Commander Naval Construction Battalion U.S. Pacific Fleet, Tân Sơn Nhất, Republic of Vietnam, Completion Report 1963–1972.
*Military training for CBs during this period lasted six weeks. Two weeks were at the respective homeport and four weeks with the Marines at Camp Lejuene or Marine Corps Base Camp Pendleton, Camp Pendleton. * United States Navy Presidential Unit Citation ribbon

Presidential Unit Citation (US), Presidential Unit Citation USN/USMC : Dets from MCBs 5, 10, 53 and CBMU 301 in support of the 26th Marines at the Battle of Khe Sanh Jan–Feb 1968. *Cold War projects: 1961 floating dry dock for Polaris submarines at Holy Loch#US Navy at Holy Loch, Holy Loch, Scotland. 1963 U.S. Naval Communications Listening Station Nea Makri, Greece. Cold War: CIA *When CBD 1510 transferred to CBD 1504 it was designated for function similar to Acorns: Aviation and OTA. The Navy's use of "OTA" denotes the assignment to the CIA in that Other Transaction Authority (OTA) is the term commonly used to refer to the (10 U.S.C. 2371b) authority of the Department of Defense (DoD) to carry out certain prototype, research and production projects." *In 2007, the Naval Expeditionary Combat Command (NECC) authorized funding forty Naval Intelligence billets in the NCF. The goal was to have organic NCF Intelligence personnel. Historically the training officer would become the intelligence officer when a CB deployed. *CIA redacted memorandum dated 14 June 1968 discusses the use on Naval Construction Personal/Seabees on a project. Iraq Afghanistan * United States Navy Presidential Unit Citation ribbon

Presidential Unit Citation (US), Presidential Unit Citation USN/USMC : 30th NCR, NMCBs 4, 5, 74, 133, Air-Det 22nd NCR, Air-Det UCT 2, NCF Support Unit 2 in support of the First Marine Expeditionary Force (I MEF Engineer Group) in November 2003 added later upon review were: NMCBs 7, 15 as well as Air-Det NMCB 21, Air-Det NMCB 25, and CBMU 303 Det. (per: CMC MARADMIN 507/03) *In 2015, ACB 1 moved the Orion (spacecraft) Boilerplate (spaceflight) test article (aerospace), test article for NASA at San Diego, CA. Seabee insignia *World War II Naval Construction Battalion Logos *CBs sponsored many B-29s on Tinian tagging the aircraft with Seabee unit insignia as nose art. Naval Support Unit *In 1977, the U.S. Embassy in Moscow suffered a severe fire prompting the construction of a new one in 1979. At the construction site of the new embassy twenty to thirty Seabees were assigned to oversee 800 plus Russian construction workers. This prompted the Russians to embed bugs in construction materials prior to delivery to the construction site. The success of the KGB in bugging the new embassy only reinforced the State Department's need for the Seabees. SEABEE Barge Carriers *Unusual Hull Design Requirements of the SEABEE Barge Carriers.Unusual Hull Design Requirements, Construction Operating Experience of the SEABEE Barge Carriers
by Stuart W. Thayer, Member, Lykes Bros. Steamship Co., Inc., New Orleans, LA, and Alfred H. Schwendtner, Associate Member, J. J. Henry Co., Inc., New York, The Society of Naval Architects and Marine Engineers, New York, Presented at the Ship Structure Symposium, Washington, DC, October 6–8, 1975

References

General sources

External links

Camille and the Seabees (1971)
*
Report_EuropeanOperations Seabees Report: European Operations (1945)

Seabees. Department of the Navy. Bureau of Yards and Docks (c. 1944)

Seabee Divers

* [http://www.seabeehf.org/ Seabee & CEC Historical Foundation]
Seabees in the Antarctic: Base Construction

''Seabee Online'': official online magazine of the Seabees

U.S. Navy Divers Training Center
{{US Marine Corps navbox United States Navy Seabees Seabee units and formations Military engineering of the United States United States Navy ratings Military units and formations established in 1942

Naval construction history

World War II

African American Service: the Seabee stevedores

Seabee North Slope Oil Exploration 1944

World War II Seabees outside the NCF

Marine Corps

Naval Combat Demolition Units

Underwater Demolition Teams (UDT)s

Cold War

Postwar interlude: Siberia-China

Nuclear tests

Korean War

Camp David

Antarctica: Science

Vietnam War

Space race: NASA/Tektite I

CIA and Naval Intelligence/Communication support

Naval Support Unit: Department of State/Embassy security

Cold War winds down

International terrorism

Persian Gulf War

Iraq, Afghanistan, and the War on Terror

Disaster Relief and Recovery

Naval Construction Force (NCF)

Seabees outside the NCF

Training and Rates

The "Seabee" and Unit insignias

Qualification badges and Unit awards

Seabee barge carriers

Museums

Seabees of notable Seabee service

See also

Notes

References

General sources

Further reading

External links