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Underway Replenishment Oilers - T-AO

Description: Thirteen underway replenishment oilers are operated by Military Sealift Command and provide underway replenishment of fuel to U.S. Navy ships at sea and jet fuel for aircraft assigned to aircraft carriers. Three of the newest MSC underway replenishment oilers have double hulls.

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

Background: Fitted with integrated electrical auxiliary propulsion, the delivery of USNS Patuxent (T-ATF 201), USNS Rappahannock (T-ATF 204) and USNS Laramie (T-ATF 203) was delayed by the decision to fit double hulls 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 1.83 m at the sides and 1.98 m on the bottom. USNS Henry J. Kaiser (T-AO 187) has become part of the MSC Prepositioning Program at Diego Garcia, carrying aviation fuel.

Point of contact:
Office of Public Affairs
Military Sealift Command
Washington, D.C. 20398-5540
(202) 685-5055 or www.msc.navy.mil

General Characteristics: Henry J. Kaiser Class

Builder: Avondale Shipyards, Inc., New Orleans, La.
Power Plant: 2 Colt-Pielstick 10 PC4.2 V 570 diesels; 34,442 hp(m) (24.3MW) sustained; 2 shafts; cp props
Length: 677.5 feet (206.5 meters)
Beam: 97.5 feet (29.7 meters)
Displacement:
40,700 tons (41,353.16 metric ton); 42,000 tons (42,674.02 metric tons) [T-AO 201, 203-204] full load
Capactiy: 180,000; 159,000 [T-AO 201, 203-204] barrels of fuel oil or aviation fuel
Speed: 20 knots (23 mph)
Ships: No homeports assigned
USNS Henry J. Kaiser (TAO 187)
USNS Walter S. Diehl (T-AO 193)
USNS Ericsson (T-AO 194)
USNS Leroy Grumman (T-AO 195)
USNS Kanawha (T-AO 196)
USNS Pecos (T-AO 197)
USNS Big Horn (T-AO 198)
USNS Tippecanoe (T-AO 199)
USNS Guadalupe (T-AO 200)
USNS Patuxent (T-AO 201)
USNS Yukon (T-AO 202)
USNS Laramie (T-AO 203)
USNS Rappahannock (T-AO 204)
Crew: 82 civilian crew (18 officers); 21 Navy (1 officer) plus 21 spare
Aircraft: Helicopter platform only

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