USS Manayunk (YN-100/AN-81) was a Cohoes-class net laying ship

Net laying ship

A net laying ship, also known as a net layer, net tender or boom defence vessel was a type of small auxiliary ship.A net layer's primary function was to lay and maintain steel anti-torpedo or anti-submarine nets. Nets could be laid around an individual ship at anchor, or around harbors or other...

 which was assigned to protect U.S. Navy ships and harbors during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

 with her anti-submarine

Submarine

A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...

 nets. Her World War II career was short lived as the war was ending, and she was placed in reserve and eventually struck by the Navy.

Constructed at Portland, Oregon

The second ship to be so named by the Navy, Manayunk was laid down as YN-100 by the Commercial Iron Works

Commercial Iron Works

Commercial Iron Works was a manufacturing firm in Portland, Oregon, United States. Established in 1916, the company is best remembered today for its contribution to America's emergency shipbuilding program during World War II....

, Portland, Oregon

Portland, Oregon

Portland is a city located in the Pacific Northwest, near the confluence of the Willamette and Columbia rivers in the U.S. state of Oregon. As of the 2010 Census, it had a population of 583,776, making it the 29th most populous city in the United States...

; 18 December 1944; redesignated AN-81, 17 January 1945; launched 30 March 1945; sponsored by Mrs. Bryan Wallace Strong; and commissioned 25 May 1945, Lt. M. S. Shaw in command.

World War II related service

Following shakedown and training, Manayunk steamed for the central Pacific Ocean

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

 for duty with Minecraft, Pacific Fleet. She operated in the Mariana Islands

Mariana Islands

The Mariana Islands are an arc-shaped archipelago made up by the summits of 15 volcanic mountains in the north-western Pacific Ocean between the 12th and 21st parallels north and along the 145th meridian east...

, primarily in the Saipan

Saipan

Saipan is the largest island of the United States Commonwealth of the Northern Mariana Islands , a chain of 15 tropical islands belonging to the Marianas archipelago in the western Pacific Ocean with a total area of . The 2000 census population was 62,392...

-Tinian

Tinian

Tinian is one of the three principal islands of the Commonwealth of the Northern Mariana Islands.-Geography:Tinian is about 5 miles southwest of its sister island, Saipan, from which it is separated by the Saipan Channel. It has a land area of 39 sq.mi....

 area, laying and maintaining nets and moorings until the spring of 1946.

Post-war inactivation

On 3 May, she departed Saipan for Pearl Harbor

Pearl Harbor

Pearl Harbor, known to Hawaiians as Puuloa, is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. Much of the harbor and surrounding lands is a United States Navy deep-water naval base. It is also the headquarters of the U.S. Pacific Fleet...

 and the U.S. West Coast. Arriving at Astoria, Oregon

Astoria, Oregon

Astoria is the county seat of Clatsop County, Oregon, United States. Situated near the mouth of the Columbia River, the city was named after the American investor John Jacob Astor. His American Fur Company founded Fort Astoria at the site in 1811...

, 2 June, she decommissioned 19 July and was placed in reserve. The ship remained a unit of the 19th Fleet until June 1961 when she was transferred to the U.S. Maritime Administration

U.S. Maritime Administration

The United States Maritime Administration is an agency of the United States Department of Transportation that maintains the National Defense Reserve Fleet as a ready source of ships for use during national emergencies, and assists the NDRF in fulfilling its role as the nation's fourth arm of...

 and placed in the National Defense Reserve Fleet

National Defense Reserve Fleet

The National Defense Reserve Fleet consists of "mothballed" ships, mostly merchant vessels, that can be activated within 20 to 120 days to provide shipping for the United States of America during national emergencies, either military or non-military, such as commercial shipping crises.The NDRF is...

.

She continued to be listed as Navy-owned until formally turned over to the U.S. Maritime Administration in September 1962 at Olympia, Washington

Olympia, Washington

Olympia is the capital city of the U.S. state of Washington and the county seat of Thurston County. It was incorporated on January 28, 1859. The population was 46,478 at the 2010 census...

.

Manayunk remained a unit of the MARAD

Marad

Marad was an ancient Sumerian city. Marad was situated on the west bank of the then western branch of the Upper Euphrates River west of Nippur in modern day Iraq and roughly 50 km southeast of Kish, on the Arahtu River.The city's ziggurat E-igi-kalama was dedicated to Ninurta the god of...

Reserve Fleet at Olympia. She was struck from the Navy list in September 1962; her fate is unknown.