USS Sebec (AO-87) was a Escambia-class fleet oiler acquired by the United States Navy for use during World War II.

Fox, she was delivered to the Kaiser Swan Island Yard, Portland, Oregon, for completion and conversion to an oiler, and accepted and commissioned by the Navy on 29 March 1944.

On 20 November, Mississinewa (AO-59) exploded in her berth 2,500 yards from Sebec, hit by a Japanese "Kaiten" manned torpedo, launched from an enemy submarine nearby.

Four times that day, the crew was ordered to general quarters in response to reports of enemy submarines nearby.

On 1 July, she was transferred to the Maritime Commission, but was reinstated on the Navy List on 28 April 1950, and assigned to Military Sea Transportation Service as the non-commissioned naval vessel USNS Sebec (T-AO-87), manned by a civilian crew.

During the latter part of the Korean War, Sebec carried fuel oil from Bahrain, Persian Gulf, to Okinawa and Japan.

Sebec arrived at Long Beach, California, on Christmas Eve 1953, but began the new year getting underway for Pearl Harbor.

On 22 December 1955, Sebec was placed in the National Defense Reserve Fleet at Suisun Bay, California, and struck from the Navy List.

She was acquired to the United States Army on 9 June 1966, and converted to a floating power station at Bender Shipbuilding and Repair Co., Mobile, Alabama, before seeing service in Vietnam.

Title to Sebec was transferred to MARAD for the US Army, the ship was subsequently sold for scrapping, to Dongkuk Steel Co., Ltd., Seoul, South Korea, on 9 September 1974.