''APc-1''-class small coastal transports were a

troopship A troopship (also troop ship or troop transport or trooper) is a ship used to carry soldiers, either in peacetime or wartime. Troopships were often drafted from commercial shipping fleets, and were unable land troops directly on shore, typicall ...

design used during

World War 2 World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...

for the

United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...

(USN). These ships were assigned to the

Pacific War The Pacific War, sometimes called the Asia–Pacific War, was the theater of World War II that was fought in Asia, the Pacific Ocean, the Indian Ocean, and Oceania. It was geographically the largest theater of the war, including the vast ...

where they transported supplies, personnel and munitions around the

Island hopping campaign Leapfrogging, also known as island hopping, was a military strategy employed by the Allies in the Pacific War against the Empire of Japan during World War II. The key idea is to bypass heavily fortified enemy islands instead of trying to captu ...

. Many of the ships were under threat of air, sea and submarine attack. A few ships of the class received

battle star A service star is a miniature bronze or silver five-pointed star inch (4.8 mm) in diameter that is authorized to be worn by members of the eight uniformed services of the United States on medals and ribbons to denote an additional award or ser ...

s for combat valor, including USS ''APc-15'', USS ''APc-22'', USS ''APc-25'' and USS ''APc-26''. The wooden-hulled ships were built by many different

shipyards A shipyard, also called a dockyard or boatyard, is a place where ships are built and repaired. These can be yachts, military vessels, cruise liners or other cargo or passenger ships. Dockyards are sometimes more associated with maintenance a ...

. Following the war, many of them were converted to

fishing vessel A fishing vessel is a boat or ship used to catch fish in the sea, or on a lake or river. Many different kinds of vessels are used in commercial, artisanal and recreational fishing. The total number of fishing vessels in the world in 2016 was es ...

Design

The design is based on the wooden-hulled USN AMc . The USN

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 ...

gave the order for the construction of 50 AMc coastal minesweepers, ''AMc-150''–''AMc-199'' on January 19, 1942. The coastal minesweepers design was modified, as the need for a small coastal transports was great at the time. The

Bureau of Ships The United States Navy's Bureau of Ships (BuShips) was established by Congress on 20 June 1940, by a law which consolidated the functions of the Bureau of Construction and Repair (BuC&R) and the Bureau of Engineering (BuEng). The new bureau was to ...

issued the specifications for the modified coastal minesweepers design for ships ''AMc 150''–''AMc-199'' in February 1942. The Chief of Naval Operations issued the request that the 50 ships be constructed as "raider transports, AP," for use in the South Pacific War on April 13, 1942. Many planned and under construction AMc coastal minesweepers were changed to APc small coastal transports. Of the many ''APc-1''-class small coastal transports built, ten ships, ''APc-85'' to ''APc-94'', were transferred to work in the

United States Atlantic Fleet United may refer to: Places * United, Pennsylvania, an unincorporated community * United, West Virginia, an unincorporated community Arts and entertainment Films * ''United'' (2003 film), a Norwegian film * ''United'' (2011 film), a BBC Two fi ...

. Some were transfer to the

United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and North ...

under the

Lend-Lease Lend-Lease, formally the Lend-Lease Act and introduced as An Act to Promote the Defense of the United States (), was a policy under which the United States supplied the United Kingdom, the Soviet Union and other Allied nations with food, oil, ...

act. After the war the USN converted some to personnel

ferries A ferry is a ship, watercraft or amphibious vehicle used to carry passengers, and sometimes vehicles and cargo, across a body of water. A passenger ferry with many stops, such as in Venice, Italy, is sometimes called a water bus or water tax ...

with a capacity of up to 250 persons by removing some of the open sea

ballast Ballast is material that is used to provide stability to a vehicle or structure. Ballast, other than cargo, may be placed in a vehicle, often a ship or the gondola of a balloon or airship, to provide stability. A compartment within a boat, ship, ...

and removal of

deck gun A deck gun is a type of naval artillery mounted on the deck of a submarine. Most submarine deck guns were open, with or without a shield; however, a few larger submarines placed these guns in a turret. The main deck gun was a dual-purpose ...

s. Many after the war were sold to be

fishing boats A fishing vessel is a boat or ship used to catch fish in the sea, or on a lake or river. Many different kinds of vessels are used in commercial, artisanal and recreational fishing. The total number of fishing vessels in the world in 2016 was es ...

. The specifications for modified coastal minesweepers redesign, where given by the District Craft Development Board on April 20, 1942, The redesign gave three planned uses for new APc transport ships: # Transportation of two officers and 74 men (possibly a raiding party) for maximum for each of 24 hours. # Transportation of two officers, 15 men, and a cargo of for 24 hours. # Carrying a cargo of (17 tons) and no passengers on a voyage of .

Description

The ships had a

displacement Displacement may refer to: Physical sciences Mathematics and Physics *Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...

of 100 tons, a length of , a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...

of and a

draft Draft, The Draft, or Draught may refer to: Watercraft dimensions * Draft (hull), the distance from waterline to keel of a vessel * Draft (sail), degree of curvature in a sail * Air draft, distance from waterline to the highest point on a vessel ...

of . For service electrical need the ships had two

diesel Diesel may refer to: * Diesel engine, an internal combustion engine where ignition is caused by compression * Diesel fuel, a liquid fuel used in diesel engines * Diesel locomotive, a railway locomotive in which the prime mover is a diesel engin ...

30 kW 120V DC service generators. The ships had a fuel capacity of of

diesel fuel Diesel fuel , also called diesel oil, is any liquid fuel specifically designed for use in a diesel engine, a type of internal combustion engine in which fuel ignition takes place without a spark as a result of compression of the inlet air and t ...

. The ships had a large boom with a capacity of 3 tons to load and unload cargo. Ships were armed with two

Oerlikon 20 mm cannon The Oerlikon 20 mm cannon is a series of autocannons, based on an original German Becker Type M2 20 mm cannon design that appeared very early in World War I. It was widely produced by Oerlikon Contraves and others, with various models emplo ...

. Power was from one Atlas 6HM2124

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...

, to a Snow and Knobstedt single reduction gear, to a single propeller with , built in Oakland, California or One

Enterprise Engine The Enterprise Foundry Company was incorporated in 1908. On 28 November 1940 the company name was changed to Enterprise Engine & Foundry Company to reflect the changed nature of the business. The original foundry was established in 1886. The co ...

DMG-6 diesel engine with a single propeller with 400 shp.

Shipyards

Many of the APc transport ships were built by small shipyards and boatyards that switched from yacht, sailboat and powerboat building to military construction. APc transport ships were built in 1942 and 1943 by: *

Nathanael Greene Herreshoff Nathanael Greene Herreshoff (March 18, 1848 – June 2, 1938) was an American naval architect, mechanical engineer, and yacht design innovator. He produced a succession of undefeated America's Cup defenders between 1893 and 1920. Biography Herr ...

Bristol, Rhode Island Bristol is a town in Bristol County, Rhode Island, US as well as the historic county seat. The town is built on the traditional territories of the Pokanoket Wampanoag. It is a deep water seaport named after Bristol, England. The population of B ...

Fulton Shipyard Fulton Shipyard was a shipbuilding company in Antioch, California. The shipyard was founded in 1924 by Frank Fulton and Angeline Fulton Fredericks. To support the World War II demand for ships, Fulton Shipyard built minesweepers, tugboats, a ...

Antioch, California Antioch is the third-largest city in Contra Costa County, California, United States. Located in the East Bay region of the San Francisco Bay Area along the Sacramento–San Joaquin River Delta. The city's population was 115,291 at the 2020 Unite ...

* Cryer & Sons in

Oakland, California Oakland is the largest city and the county seat of Alameda County, California, United States. A major West Coast of the United States, West Coast port, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third ...

* Warren Boat Yard in

Warren, Rhode Island Warren is a town in Bristol County, Rhode Island, United States. The population was 11,147 at the 2020 census. History Warren was the site of the Pokanoket Indian settlement of Sowams located on a peninsula within the Pokanoket region. The reg ...

* Camden Shipbuilding in

Camden, Maine Camden is a resort town in Knox County, Maine. The population was 5,232 at the 2020 census. The population of the town more than triples during the summer months, due to tourists and summer residents. Camden is a summer colony in the Mid-Coas ...

Hodgdon Yachts Hodgdon Yachts (incorporated as Hodgdon Shipbuilding, LLC and previously known as "Hodgdon Brothers" yard) is a builder of yachts and specialized military vessels, based in East Boothbay, Maine. It is a family-run business that was founded in 181 ...

Boothbay, Maine Boothbay is a town in Lincoln County, Maine, United States. The population was 3,003 at the 2020 census. It includes the villages of Back Narrows, Dover, East Boothbay, Linekin, Oak Hill, Ocean Point, Spruce Shores, and Trevett. The Boothbay regi ...

* Anderson & Cristofani in

San Francisco, California San Francisco (; Spanish for " Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the fourth most populous in California and 17th ...

Lynch Shipbuilding Lynch Shipbuilding was a wooden shipbuilding company in San Diego, California. To support the World War II demand for ships, Lynch Shipbuilding built US Navy rescue tugs and Coastal trading vessel, coastal cargo ships. Lynch Shipbuilding yard w ...

San Diego, California San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...

* Harry G. Marr in

Damariscotta, Maine Damariscotta (/ dæmrɪˈskɒtə/ ) is a town in Lincoln County, Maine, United States. The population was 2,297 at the 2020 census. Damariscotta is the oyster capital of New England. A popular tourist destination, the towns of Damariscotta and N ...

* W. A. Robinson, Inc. in

Ipswich, Massachusetts Ipswich is a coastal town in Essex County, Massachusetts, United States. The population was 13,785 at the 2020 census. Home to Willowdale State Forest and Sandy Point State Reservation, Ipswich includes the southern part of Plum Island. A reside ...

* Bristol Yachts in

Seekonk, Massachusetts Seekonk is a town in Bristol County, Massachusetts, United States, on the Massachusetts border with Rhode Island. It was incorporated in 1812 from the western half of Rehoboth. The population was 15,531 at the 2020 census. Until 1862, the town o ...

* Noank Shipbuilding in

Noank, Connecticut Noank ( ) is a village in the town of Groton, Connecticut. This dense community of historic homes and local businesses sits on a small, steep peninsula at the mouth of the Mystic River with a long tradition of fishing, lobstering and boat-buildin ...

Notable ships

*, built by Camden Ship Building. *, built by Hodgdon Brothers, sank December 17, 1943 during landing in the

Battle of Arawe The Battle of Arawe (also known as Operation Director) was fought between Allied and Japanese forces during the New Britain campaign of World War II. The battle formed part of the Allied Operation Cartwheel, and had the objective of serving as a ...

, was struck by a bomb during an enemy air attack off

Arawe Arawe is an island in Papua New Guinea, located on the southern coast of New Britain about from Cape Gloucester. It is also the name given to the island's surrounding area, which is also known as Cape Merkus. A small harbour known as Arawe Har ...

New Britain New Britain ( tpi, Niu Briten) is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi the Dam ...

. *, built by Fulton Shipyard, renamed ''Cape Scott'' then '' Cape Cross''.USS APc-25, ''auticapedia.ca''
/ref>

Ships in class

''APc-80'' to ''APc-84'', ''APc-104'' to ''APc-107'', ''APc-112'' to ''APc-115'', ''APc-99'' and ''APc-100'' were canceled before construction started.

References

External links

* * * * * {{DEFAULTSORT:APc-1-class small coastal transports APc-1-class small coastal transports Auxiliary ship classes Auxiliary ship classes of the United States Navy