Description
Fifteen fleet replenishment oilers are operated by Military Sealift Command (MSC) 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
Kaiser-class ships carry jet fuel, diesel fuel and lubricating oil, and small quantities of fresh and frozen provisions, stores, potable water and other items. Fleet replenishment oilers normally operate with five underway replenishment station capability when deployed. However, fleet oilers assigned to the Southern California and middle Pacific operating areas, as well as two of the four oilers operating in the western Atlantic Ocean, are crewed to operate with up to three underway replenishment stations capability to reduce costs.   Background
Three ships within the class Rappahannock, Laramie and Patuxent were built with double hulls in compliance with the Oil Pollution Act of 1990, although government-owned ships currently are exempt from the act.   Program Status
In June 2016, the Navy awarded a $3.2 billion contract to General Dynamics NASSCO in San Diego for the design and construction of the first six ships of the Future Fleet Replenishment Ship, the John Lewis class (T-AO 205), formerly T-AO(X), with construction commencing in September 2018. The Navy plans to procure 20 ships of the new class in three different contract awards.
  General Characteristics, Henry J. Kaiser Class Builder: Avondale Shipyards Propulsion: Two fully automatic diesel engines, twin shafts, controllable-pitch propellers, 32,540 horsepower Length: 677.5 feet (206.5 meters) Beam: 97.5 feet (29.7 meters) Displacement: 41,225 tons full load (double hull), 40,900 tons full load (single hull) Speed: 20 knots (23 mph) Crew: 74-89 civilian mariners (CIVMARS) Load: 180,000 barrels of aviation and diesel fuel Aircraft: None (landing platform for vertical replenishment provided) Homeport: No homeports assigned. Ships: USNS Henry J. Kaiser (T-AO 187) - Operates in the area of Pacific/Arabian Gulf USNS Joshua Humphreys (T-AO 188) - Operates in the area of Persian Gulf USNS John Lenthall (T-AO 189) - Operates in the area of Atlantic/Mediterranean/Arabian Gulf USNS Walter S. Diehl (T-AO 193) - Operates in the area of Pacific/Arabian Gulf USNS John Ericsson (T-AO 194) - Operates in the area of Pacific/Arabian Gulf USNS Leroy Grumman (T-AO 195) - Operates in the area of Atlantic/Mediterranean/Arabian Gulf USNS Kanawha (T-AO 196) - Operates in the area of Atlantic/Mediterranean/Arabian Gulf USNS Pecos (T-AO 197) - Operates in the area of Pacific/Arabian Gulf USNS Big Horn (T-AO 198) - Operates in the area of Atlantic/Mediterranean USNS Tippecanoe (T-AO 199) - Operates in the area of Pacific/Arabian Gulf USNS Guadalupe (T-AO 200) - Operates in the area of Pacific/Arabian Gulf USNS Patuxent (T-AO 201) - Operates in the area of Atlantic/Mediterranean/Arabian Gulf USNS Yukon (T-AO 202) - Operates in the area of Pacific/Arabian Gulf USNS Laramie (T-AO 203) - Operates in the area of Atlantic/Mediterranean/Arabian Gulf USNS Rappahannock (T-AO 204) - Operates in the area of Pacific/Arabian Gulf   General Characteristics, John Lewis Class Builder: NASSCO Propulsion: Twin shaft, geared medium speed diesels with PTO generators/PTI Length: 227.3 meters Beam: 32.2 meters Displacement: 22,173 metric tons (lightship) Speed: 20 knots Crew: 99 civilian mariners (CIVMARS) Load: Dry Stores Capacity: 1,576 m3 Freeze/Chill Capacity: 1,362 m3 Aircraft: None (landing platform for vertical replenishment can accommodate H-1, H-53, H-60, MV-22, and MSC's commercial logistics helicopters.) Ships: T-AO-205 John Lewis - Under construction T-AO-206 Harvey Milk - Under construction T-AO 207 Earl Warren - Under construction T-AO 208 Robert F. Kennedy - Under contract T-AO 209 Lucy Stone - Under contract T-AO 210 Sojouner Truth - Under contract
T-AO 211 Thurgood Marshall - Named

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