USS Wampatuck (YT-337) later YTB-337 was United States Navy

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 harbor

Harbor

A harbor or harbour , or haven, is a place where ships, boats, and barges can seek shelter from stormy weather, or else are stored for future use. Harbors can be natural or artificial...

 tug

Tugboat

A tugboat is a boat that maneuvers vessels by pushing or towing them. Tugs move vessels that either should not move themselves, such as ships in a crowded harbor or a narrow canal,or those that cannot move by themselves, such as barges, disabled ships, or oil platforms. Tugboats are powerful for...

 in commission from 1942 to 1946.

Wampatuck was built as the commercial wood

Wood

Wood is a hard, fibrous tissue found in many trees. It has been used for hundreds of thousands of years for both fuel and as a construction material. It is an organic material, a natural composite of cellulose fibers embedded in a matrix of lignin which resists compression...

en-hulled

Hull (watercraft)

A hull is the watertight body of a ship or boat. Above the hull is the superstructure and/or deckhouse, where present. The line where the hull meets the water surface is called the waterline.The structure of the hull varies depending on the vessel type...

, single-screw, steam

Steam

Steam is the technical term for water vapor, the gaseous phase of water, which is formed when water boils. In common language it is often used to refer to the visible mist of water droplets formed as this water vapor condenses in the presence of cooler air...

 harbor

Harbor

A harbor or harbour , or haven, is a place where ships, boats, and barges can seek shelter from stormy weather, or else are stored for future use. Harbors can be natural or artificial...

 tug

Tugboat

A tugboat is a boat that maneuvers vessels by pushing or towing them. Tugs move vessels that either should not move themselves, such as ships in a crowded harbor or a narrow canal,or those that cannot move by themselves, such as barges, disabled ships, or oil platforms. Tugboats are powerful for...

 SS Sea Ranger at Oakland

Oakland, California

Oakland is a major West Coast port city on San Francisco Bay in the U.S. state of California. It is the eighth-largest city in the state with a 2010 population of 390,724...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, by W. F. Stone and Son. She was completed in May 1921.

She was acquired by the U.S. Navy for 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...

 service under a bareboat charter

Charter

A charter is the grant of authority or rights, stating that the granter formally recognizes the prerogative of the recipient to exercise the rights specified...

 from the Foss Launch and Tug Company

Foss Launch and Tug Company

Foss Launch and Tug Company was founded in 1889 by Thea Foss and her husband Andrew Foss. The company, now known as Foss Maritime, is now the largest tug and towing concern on the west coast of the United States.-Course of business:...

 of San Francisco

San Francisco, California

San Francisco , officially the City and County of San Francisco, is the financial, cultural, and transportation center of the San Francisco Bay Area, a region of 7.15 million people which includes San Jose and Oakland...

, California, on 28 October 1942 and commissioned as harbor tug USS Wampatuck (YT-337). Placed in service at 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...

, Territory of Hawaii

Territory of Hawaii

The Territory of Hawaii or Hawaii Territory was an organized incorporated territory of the United States that existed from July 7, 1898, until August 21, 1959, when its territory, with the exception of Johnston Atoll, was admitted to the Union as the fiftieth U.S. state, the State of Hawaii.The U.S...

, on 22 December 1942, she served as a harbor tug and performed tow services through the 15 August 1945 end of hostilities with Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

.

During her tour of duty at Pearl Harbor, she was reclassified as a large harbor tug and simultaneously redesignated YTB-337 on 15 May 1944.

Shifting to the United States West Coast after the war, Wampatuck was decommissioned

Ship decommissioning

To decommission a ship is to terminate her career in service in the armed forces of her nation. A somber occasion, it has little of the elaborate ceremony of ship commissioning, but carries significant tradition....

 at San Francisco on 6 May 1946. Her name was struck from the Navy List

Navy List

A 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 authorities of a country....

 on 21 May 1946. She soon returned to her civilian name SS Sea Ranger.

Transferred to the Maritime Commission at Mare Island Navy Yard, Vallejo

Vallejo, California

Vallejo is the largest city in Solano County, California, United States. The population was 115,942 at the 2010 census. It is located in the San Francisco Bay Area on the northeastern shore of San Pablo Bay...

, California, on 16 August 1946, Sea Ranger was subsequently assigned to 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...

 and laid up at Suisun Bay

Suisun Bay

Suisun Bay is a shallow tidal estuary at in northern California, USA. It lies at the confluence of the Sacramento and San Joaquin Rivers, forming the entrance to the Sacramento-San Joaquin River Delta, an inverted river delta...

, Benecia, California, on 31 March 1948. She remained there until her name disappeared from the merchant shipping registers in 1955.