The SS Fort Cumberland was one of the nearly 500 Type T2-SE-A1 tankers ordered by the Maritime Commission during World War II. She was named for the city of Cumberland, Maryland

Cumberland, Maryland

Cumberland is a city in the far western, Appalachian portion of Maryland, United States. It is the county seat of Allegany County, and the primary city of the Cumberland, MD-WV Metropolitan Statistical Area. At the 2010 census, the city had a population of 20,859, and the metropolitan area had a...

 while her predecessors were named for the river

Cumberland River

The Cumberland River is a waterway in the Southern United States. It is long. It starts in Harlan County in far southeastern Kentucky between Pine and Cumberland mountains, flows through southern Kentucky, crosses into northern Tennessee, and then curves back up into western Kentucky before...

. After the war she was sold to Standard Oil of New Jersey and sailed under the name Esso Cumberland.

In 1956 with the Suez crisis

Suez Crisis

The Suez Crisis, also referred to as the Tripartite Aggression, Suez War was an offensive war fought by France, the United Kingdom, and Israel against Egypt beginning on 29 October 1956. Less than a day after Israel invaded Egypt, Britain and France issued a joint ultimatum to Egypt and Israel,...

 Esso Cumberland was acquired by the Navy and assigned to the Military Sealift Command

Military Sealift Command

The Military Sealift Command is a United States Navy organization that controls most of the replenishment and military transport ships of the Navy. It first came into existence on 9 July 1949 when the Military Sea Transportation Service became solely responsible for the Department of Defense's...

 as USNS Cumberland (T-AO-153).

In 1966, Cumberland was converted by Newport News Shipbuilding & Dry Dock Company to a floating electric power supply ship for use in Vietnam

Vietnam

Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...

 by the United States Army

United States Army

The United States Army is the main branch of the United States Armed Forces responsible for land-based military operations. It is the largest and oldest established branch of the U.S. military, and is one of seven U.S. uniformed services...

. Stationed at Qui Nhon

Qui Nhon

Qui Nhơn , also Quy Nhơn, is a coastal city in Binh Dinh province in central Vietnam. It is composed of 16 wards and five communes with a total of 286 km². Quy Nhon is the capital of Bình Định province. As of 2009 its population was 280,900. Historically, the commercial activities of the city...

, Vietnam her main machinery generated electricity which was transmitted, via power cables, ashore to sub-stations. Later she was moved to Cam Rahn Bay.

Cumberland was sold to Kaohsiung shipbreakers in February 1972.