USS Wapasha (YN-45), later YNT-13, later YTB-737, was a United States Navy net tender, later large harbor tug, in commission from 1941 to 1947.

The tug was classified as a yard net tender, renamed USS Wapasha, and designated YN-45 on 25 December 1940.

Wapasha was allocated to the 1st Naval District at Boston, Massachusetts, which became her home port.

Placed out of service on 11 February 1947, Wapasha was struck from the Navy List on 11 March 1947 and turned over to the Maritime Commission for disposal on 16 May 1947.

She was sold in 1976 to Solvent Tanker Corporation of Staten Island, New York, and renamed Yankee.