USS ''Portunus'' (AGP-4) was an acquired by the

U.S. 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 of ...

for use during

World War II 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 opposin ...

as a motor torpedo boat (MTB) tender. She was named after a Roman god of the sea, who had jurisdiction over ports and the shores. ''Portunus'' was laid down as ''LST-330'' by the

Philadelphia Naval Shipyard The Philadelphia Naval Shipyard was an important naval shipyard of the United States for almost two centuries. Philadelphia's original navy yard, begun in 1776 on Front Street and Federal Street in what is now the Pennsport section of the cit ...

, 12 November 1942; launched 11 February 1943 as ''Portunus'' (AGP-4); and commissioned at

Baltimore, Maryland Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...

, 12 June 1943.

World War II Pacific Theatre operations

After

shakedown Shakedown may refer to: * Shakedown (continuum mechanics), a type of plastic deformation * Shakedown (testing) or a shakedown cruise, a period of testing undergone by a ship, airplane or other craft before being declared operational * Extortion, ...

along the

U.S. East Coast The East Coast of the United States, also known as the Eastern Seaboard, the Atlantic Coast, and the Atlantic Seaboard, is the coastline along which the Eastern United States meets the Atlantic Ocean, North Atlantic Ocean. The eastern seaboard ...

, this motor

torpedo boat A torpedo boat is a relatively small and fast naval ship designed to carry torpedoes into battle. The first designs were steam-powered craft dedicated to ramming enemy ships with explosive spar torpedoes. Later evolutions launched variants of se ...

tender departed the U.S. 23 July 1943 in task group TG 29.6 for 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 conduit ...

, whence she continued to

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

. At

Cairns Cairns (, ) is a city in Queensland, Australia, on the tropical north east coast of Far North Queensland. The population in June 2019 was 153,952, having grown on average 1.02% annually over the preceding five years. The city is the 5th-most-p ...

, 10 October, she loaded PT Base 4 gear for transport to Kana Kope,

New Guinea New Guinea (; Hiri Motu Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea). It is a simplified version of ...

. On the 20th she arrived at Buna,

, and until 4 July 1944 repaired and serviced U.S. and Australian naval units operating along the New Guinea coast. Underway 4 July in convoy with and 8 units of MTB Squadron 25, ''Portunus'' arrived at

Mios Woendi Mios Woendi island is an island in the Schouten Islands of Papua province, eastern Indonesia. It lies in Cenderawasih Bay (or Geelvink Bay) off the northwestern coast of the island nation of Papua New Guinea. Description The island is in a ...

in the Schoutens 9 July. Through December, she underwent overhaul at

Brisbane, Australia Brisbane ( ) is the capital and most populous city of the Australian state of Queensland, and the third-most populous city in Australia and Oceania, with a population of approximately 2.6 million. Brisbane lies at the centre of the South ...

, and on 29 January 1945 returned to Mios Woendi and resumed repair work.

Invasion of the Philippines

On 20 February she got underway for

Leyte Leyte ( ) is an island in the Visayas group of islands in the Philippines. It is eighth-largest and sixth-most populous island in the Philippines, with a total population of 2,626,970 as of 2020 census. Since the accessibility of land has be ...

Island, whence she proceeded to

Ilo Ilo ''Ilo Ilo'' (; literally: "Mom and Dad Are Not Home") is a 2013 Filipino-Singaporean-Taiwanese drama film. The debut feature of director Anthony Chen, the film features an international cast, including Singaporean actor Chen Tianwen, Malaysian a ...

, Panay, to support MTB Ron 33 during the assault there and to establish a patrol base after its success. The assault waves met no apparent opposition, the enemy having set fires and demolition charges and evacuated the city.

Okinawa operations

On 2 April ''Portunus'' got underway for

Samar Samar ( ) is the third-largest and seventh-most populous island in the Philippines, with a total population of 1,909,537 as of the 2020 census. It is located in the eastern Visayas, which are in the central Philippines. The island is divided in ...

and

. On 16 April she joined company with the remainder of TG 78.2 to land the 24th Infantry Division,

U.S. Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cla ...

and secure

Parang Parang is a popular folk music originating from Venezuela and Trinidad and Tobago that was brought to Trinidad and Tobago by Venezuelan migrants who were primarily of Amerindian, Spanish, Mestizo, Pardo, and African heritage, something which i ...

Mindanao Mindanao ( ) ( Jawi: مينداناو) is the second-largest island in the Philippines, after Luzon, and seventh-most populous island in the world. Located in the southern region of the archipelago, the island is part of an island group of ...

. She steamed between various points on

and

, supplying MTB's, until 16 July when she got underway in

convoy A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used ...

for

Okinawa is a 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 km2 (880 sq mi). Naha is the capital and largest city ...

. She anchored off

Hagushi Hagushi bay is located in Yomitan, Okinawa. The bay is at the mouth of Hija River. The north side of the mouth of the river has a public beach called Toguchi Beach. World War II Hagushi bay was the primary unloading point for American supplie ...

, 21 July and shifted to Togouchi Harbor the next day. She serviced and repaired MTB Ron 31 and 37 and various other units through 29 September when she prepared to get underway for

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

and inactivation.

Post-war decommissioning

Decommissioned at

Mare Island, California Mare Island (Spanish language, Spanish: ''Isla de la Yegua'') is a peninsula in the United States in the city of Vallejo, California, about northeast of San Francisco. The Napa River forms its eastern side as it enters the Carquinez Strait junc ...

, 18 April 1946, she was struck from the

Navy List A Navy Directory, formerly the Navy List or Naval Register is an official list of naval officers, their ranks and seniority, the ships which they command or to which they are appointed, etc., that is published by the government or naval author ...

13 November 1946, transferred to the

Maritime Commission The United States Maritime Commission (MARCOM) was an independent executive agency of the U.S. federal government that was created by the Merchant Marine Act of 1936, which was passed by Congress on June 29, 1936, and was abolished on May 24, 195 ...

6 February 1948 and simultaneously delivered to the Kaiser Co.,

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 ...

, for scrapping.

Military awards and honors

''Portunus'' earned 3

battle stars 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 ...

for

service *American Campaign Medal *Philippines Presidential Unit Citation *Navy Occupation Service Medal (with Asia clasp) *World War II Victory Medal *Asiatic-Pacific Campaign Medal (3) *Philippines Liberation Medal

References

External links

NavSource Online: Amphibious Photo Archive - LST-330 / AGP-4 ''Portunus''
{{DEFAULTSORT:Portunus (AGP-4) Portunus-class motor torpedo boat tenders Portunus-class motor torpedo boat tenders converted from LST-1-class ships Ships built in Philadelphia 1943 ships World War II auxiliary ships of the United States