USS Porpoise has been the name of more than one United States navy ship, and may refer to: USS Porpoise, a schooner built in 1820 and wrecked in 1833 USS Porpoise, a brig in commission from 1836 to 1847, from 1848 to 1852, and from 1853 until lost in 1854 USS Porpoise, a submarine in commission from 1903 to 1919, renamed USS A-6 in 1911 USS Porpoise, steamer in commission from 1918 to 1930, originally named USS Moosehead USS Porpoise, a submarine in commission from 1935 to 1945 USS Porpoise, a patrol yacht acquired by the United States Navy in 1917. Wikipedia