USS Wampatuck (YT-337) later YTB-337 was United States Navy harbor tug in commission from 1942 to 1946.

Wampatuck was built as the commercial wooden-hulled, single-screw, steam harbor tug SS Sea Ranger at Oakland, California, by W. F. Stone and Son.

She was acquired by the U.S. Navy for World War II service under a bareboat charter from the Foss Launch and Tug Company of San Francisco, California, on 28 October 1942 and commissioned as harbor tug USS Wampatuck (YT-337).

Shifting to the United States West Coast after the war, Wampatuck was decommissioned at San Francisco on 6 May 1946.

Transferred to the Maritime Commission at Mare Island Navy Yard, Vallejo, California, on 16 August 1946, Sea Ranger was subsequently assigned to the National Defense Reserve Fleet and laid up at Suisun Bay, Benicia, California on 31 March 1948.