Maumee Class Oiler
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The ''Maumee'' class was a class of four
United States Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage ...
fleet oiler A replenishment oiler or replenishment tanker is a naval auxiliary ship with fuel tanks and dry cargo holds which can supply both fuel and dry stores during underway replenishment (UNREP) at sea. Many countries have used replenishment oilers. The ...
s in service from the mid-1950s until the mid-1980s. It was the first class of
United States Naval Ship United States Naval Ship (USNS) is the prefix designation given to non- commissioned ships that are property of the United States Navy (USN). Definition United States Naval Ships are unarmed auxiliary support vessels owned by the U.S. Navy ...
s. The ''Maumee'' class ships were the first of the Navy's new "
supertanker An oil tanker, also known as a petroleum tanker, is a ship designed for the bulk cargo, bulk transport of petroleum, oil or its products. There are two basic types of oil tankers: crude tankers and product tankers. Crude tankers move large quant ...
s", significantly larger than previously classes. They also were the first U.S. Navy ships specifically designed and launched with an intention that they be operated in a non-commissioned status by the
Military Sea Transportation Service Military Sealift Command (MSC) is an organization that controls the replenishment and military transport ships of the United States Navy. Military Sealift Command has the responsibility for providing sealift and ocean transportation for all US m ...
, later the
Military Sealift Command Military Sealift Command (MSC) is an organization that controls the replenishment and military transport ships of the United States Navy. Military Sealift Command has the responsibility for providing sealift and ocean transportation for all US m ...
, with civilian crews working under contract. They thus became the first
United States Naval Ship United States Naval Ship (USNS) is the prefix designation given to non- commissioned ships that are property of the United States Navy (USN). Definition United States Naval Ships are unarmed auxiliary support vessels owned by the U.S. Navy ...
s, and the first to be given the designation "
USNS United States Naval Ship (USNS) is the prefix designation given to non- commissioned ships that are property of the United States Navy (USN). Definition United States Naval Ships are unarmed auxiliary support vessels owned by the U.S. Navy ...
" instead of " USS" (for
United States Ship United States Ship (abbreviated as USS or U.S.S.) is a ship prefix used to identify a commissioned ship of the United States Navy and applies to a ship only while it is in commission. Before commissioning, the vessel may be referred to as a " pr ...
, the long-standing designation for ships in commission and crewed by Navy personnel). The "T" appended to the beginning of their
hull number Hull number is a serial identification number given to a boat or ship. For the military, a lower number implies an older vessel. For civilian use, the HIN is used to trace the boat's history. The precise usage varies by country and type. United S ...
s indicated civilian manning, a convention still in use today. When the lead unit, USNS ''Maumee'' (T-AO-149), entered service in December 1956, she was the first USNS ship in history. The ships were not designed for
underway replenishment Replenishment at sea (RAS) (North Atlantic Treaty Organization/Commonwealth of Nations) or underway replenishment (UNREP) (U.S. Navy) is a method of transferring fuel, munitions, and stores from one ship to another while under way. First develope ...
(refueling ships at sea). Rather they were intended to transport bulk
petroleum Petroleum, also known as crude oil, or simply oil, is a naturally occurring yellowish-black liquid mixture of mainly hydrocarbons, and is found in geological formations. The name ''petroleum'' covers both naturally occurring unprocessed crud ...
products, such as
fuel oil Fuel oil is any of various fractions obtained from the distillation of petroleum (crude oil). Such oils include distillates (the lighter fractions) and residues (the heavier fractions). Fuel oils include heavy fuel oil, marine fuel oil (MFO), bun ...
,
gasoline Gasoline (; ) or petrol (; ) (see ) is a transparent, petroleum-derived flammable liquid that is used primarily as a fuel in most spark-ignited internal combustion engines (also known as petrol engines). It consists mostly of organic co ...
, and
aviation fuel Aviation fuels are petroleum-based fuels, or petroleum and synthetic fuel blends, used to power aircraft. They have more stringent requirements than fuels used for ground use, such as heating and road transport, and contain additives to enhanc ...
, to
American American(s) may refer to: * American, something of, from, or related to the United States of America, commonly known as the "United States" or "America" ** Americans, citizens and nationals of the United States of America ** American ancestry, pe ...
military forces overseas. At some time after the loss of USNS ''Potomac'' (T-AO-150) in 1961, the three survivors were reclassified as
transport oiler Transport (in British English), or transportation (in American English), is the intentional movement of humans, animals, and goods from one location to another. Modes of transport include air, land (rail and road), water, cable, pipeline, and ...
s, and were redesignated as such by having an additional "T" appended to their hull code.


Naming

The class was named for its lead unit, ''Maumee''. All four ships were named after
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river A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of wate ...
s with Native American names, a traditional convention for U.S. Navy oilers.


Operations

The ships spent their careers in non-commissioned service in the Military Sea Transport Service, later the Military Sealift Command, operating with civilian crews, from the mid-1950s. After the loss of ''Potomac'', the survivors served until probably the mid-1980s.


Ships


USNS ''Maumee'' (T-AO-149)

''Maumee'' transported petroleum primarily in the Pacific, operating in this role between mid-December 1956 and probably the mid-1980s. She eventually was reclassified as a "transport oiler" and redesignated T-AOT-149.


USNS ''Potomac'' (T-AO-150)

''Potomac'' transported petroleum from 1957 until 1961, when she was destroyed pierside by a fire and explosions. Although her forward half was a total loss, her after half was salvaged and used in the construction of fleet oiler USNS ''Potomac'' (T-AO-181).


USNS ''Shoshone'' (T-AO-151)

''Shoshone'' transported petroleum worldwide between mid-December 1956 and probably the late 1980s. Eventually reclassified as a "transport oiler" and redesignated T-AOT-151.


USNS ''Yukon'' (T-AO-152)

transported petroleum worldwide between mid-December 1956 and probably the late 1980s. Eventually reclassified as a "transport oiler" and redesignated T-AOT-152.


References

*
NavSource Online: Service Ship Photo Archive T-AO-149 / T-AOT-149 Maumee
* ttp://www.navsource.org/archives/09/19/19151.htm NavSource Online: Service Ship Photo Archive T-AO-151/T-AOT-151 Shoshonebr>NavSource Online: Service Ship Photo Archive T-AO/T-AOT-152 Yukon
{{Maumee class fleet oiler Auxiliary replenishment ship classes Maumee class oiler