Underway replenishment oiler
Overview
 
The underway replenishment oiler is a type of ship of the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

. These oilers provide underway replenishment
Underway replenishment
Underway replenishment or replenishment at sea is a method of transferring fuel, munitions, and stores from one ship to another while under way.-History:...

 of fuel to U.S. Navy ships at sea and jet fuel for aircraft assigned to aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

s. In the British
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 Royal Fleet Auxiliary
Royal Fleet Auxiliary
The Royal Fleet Auxiliary is a civilian-manned fleet owned by the British Ministry of Defence. The RFA enables ships of the United Kingdom Royal Navy to maintain operations around the world. Its primary role is to supply the Royal Navy with fuel, ammunition and supplies, normally by replenishment...

 (naval auxiliary service), such vessels are known as Fleet Tankers.

Features: There are stations on both sides of each ship for underway replenishment of fuel and stores.

Background: Fitted with medium-speed diesel
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

 propulsion, the delivery of USNS Patuxent (T-AO-201), Rappahannock
USNS Rappahannock (T-AO-204)
|...

 (T-AO-204) and Laramie (T-AO-203) was delayed by the decision to fit double hull
Double hull
A double hull is a ship hull design and construction method invented by Leonardo da Vinci where the bottom and sides of the ship have two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is some distance inboard,...

s to meet the requirements of the Oil Pollution Act of 1990.
Encyclopedia
The underway replenishment oiler is a type of ship of the United States Navy
United States Navy
The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

. These oilers provide underway replenishment
Underway replenishment
Underway replenishment or replenishment at sea is a method of transferring fuel, munitions, and stores from one ship to another while under way.-History:...

 of fuel to U.S. Navy ships at sea and jet fuel for aircraft assigned to aircraft carrier
Aircraft carrier
An aircraft carrier is a warship designed with a primary mission of deploying and recovering aircraft, acting as a seagoing airbase. Aircraft carriers thus allow a naval force to project air power worldwide without having to depend on local bases for staging aircraft operations...

s. In the British
United Kingdom
The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 Royal Fleet Auxiliary
Royal Fleet Auxiliary
The Royal Fleet Auxiliary is a civilian-manned fleet owned by the British Ministry of Defence. The RFA enables ships of the United Kingdom Royal Navy to maintain operations around the world. Its primary role is to supply the Royal Navy with fuel, ammunition and supplies, normally by replenishment...

 (naval auxiliary service), such vessels are known as Fleet Tankers.

Features: There are stations on both sides of each ship for underway replenishment of fuel and stores.

Background: Fitted with medium-speed diesel
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...

 propulsion, the delivery of USNS Patuxent (T-AO-201), Rappahannock
USNS Rappahannock (T-AO-204)
|...

 (T-AO-204) and Laramie (T-AO-203) was delayed by the decision to fit double hull
Double hull
A double hull is a ship hull design and construction method invented by Leonardo da Vinci where the bottom and sides of the ship have two complete layers of watertight hull surface: one outer layer forming the normal hull of the ship, and a second inner hull which is some distance inboard,...

s to meet the requirements of the Oil Pollution Act of 1990. This modification increased construction time from 32 to 42 months and reduced cargo capacity by 17 percent, although this can be restored in an emergency. Hull separation is 6 ft (1.8 m) at the sides and 6½ ft (2.0 m) on the bottom.
  • General characteristics: Henry J. Kaiser-Class
    Henry J. Kaiser class oiler
    The Henry J. Kaiser class is an American class of eighteen fleet replenishment oilers which began construction in August 1984. The class comprises fifteen oilers which are operated by Military Sealift Command to provide underway replenishment of fuel to United States Navy combat ships and jet fuel...

  • Builder: Avondale Shipyards, Inc., New Orleans, La.
    New Orleans, Louisiana
    New Orleans is a major United States port and the largest city and metropolitan area in the state of Louisiana. The New Orleans metropolitan area has a population of 1,235,650 as of 2009, the 46th largest in the USA. The New Orleans – Metairie – Bogalusa combined statistical area has a population...

  • Power Plant: 2 Colt-Pielstick 10 PC4.2 V 570 diesels; 34,442 hp(m) (25.68 MW) sustained; 2 shafts; cp props
  • Length: 677.5 feet (206.5 m)
  • Beam: 97.5 feet (29.7 m)
  • Displacement: 40,700 tons (41,350 metric ton) full load; 42,000 tons (42,670 metric tons) for T-AO-201, -203–204
  • Capacity: 178000 barrels (28,299.7 m³) of fuel oil
    Fuel oil
    Fuel oil is a fraction obtained from petroleum distillation, either as a distillate or a residue. Broadly speaking, fuel oil is any liquid petroleum product that is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, except oils having a flash...

     or aviation fuel
    Aviation fuel
    Aviation fuel is a specialized type of petroleum-based fuel used to power aircraft. It is generally of a higher quality than fuels used in less critical applications, such as heating or road transport, and often contains additives to reduce the risk of icing or explosion due to high temperatures,...

    ; 159,000 for T-AO-201, -203–204]
  • Speed: 20 knots (37 km/h)
  • Ships: No homeports assigned
  • Crew: 89 civilian crew (19 officers); 6 Navy plus 29 spare
  • Aircraft: Helicopter
    Helicopter
    A helicopter is a type of rotorcraft in which lift and thrust are supplied by one or more engine-driven rotors. This allows the helicopter to take off and land vertically, to hover, and to fly forwards, backwards, and laterally...

    platform only
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