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T-ATF 166 Powhatan Fleet Ocean Tugs 

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Seven ocean-going tugs are operated by Military Sealift Command and provide the US Navy with towing service, and when augmented by Navy divers, assist in the recovery of downed aircraft and ships.

Each vessel is equipped with 10 ton capacity crane and a bollard pull of at least 54 tons. A deck grid is fitted aft which contains 1 inch bolt receptacles spaced 24 inches apart. This allows for the bolting down of a wide variety of portable equipment. There are two GPH fire pumps supplying three fire monitors with up to 2,200 gallons of foam per minute. A deep module can be embarked to support naval salvage teams.

Fleet tugs are used to tow ships, barges and targets for gunnery exercises. They are also used as platforms for salvage and diving work, as participants in naval exercises, to conduct search and rescue missions, to aid in the clean up of oil spills and ocean accidents, and to provide fire fighting assistance. USNS Apache (T-ATF 172) is the last of the Powhatan class of ocean tugs delivered to the Navy in 1981.

Specifications  Return to Top

Builder Marinette Marine Corporation, Marinette, Wisc
Power Plant 2 GM EMD 20-645F7B diesels; 5.73 MW sustained;
2 shafts; Kort nozzles (except on Powhatan and one other);
cp props; bow thruster; 300 hp (224 kW)
Length Overall Length: 226 ft
Waterline Length: 204 ft
Beam Extreme Beam: 42 ft
Waterline Beam: 42 ft
Draft Maximum Navigational Draft: 15 ft
Draft Limit: 15 ft
Displacement Light Displacement: 1387 tons
Full Displacement: 2000 tons
Dead Weight: 613 tons
Speed 14.5 knots (16.68 mph)
Crew 16 civilians and 4 naval communications technicians
Aircraft none

Ships  Return to Top

Name Number Builder Homeport Ordered Commissioned Decommissioned
Powhatan T-ATF 166 Marinette Atlantic 12 Sep 1975 15 Jun 1979  
Narragansett T-ATF 167 Marinette Pacific 12 Sep 1975 09 Nov 1979  
Catawba T-ATF 168 Marinette Atlantic 12 Sep 1975 28 May 1980  
Navajo T-ATF 169 Marinette Pacific 12 Sep 1975 13 Jun 1980  
Mohawk T-ATF 170 Marinette Atlantic 27 Feb 1978 16 Oct 1980  
Sioux T-ATF 171 Marinette Pacific 27 Feb 1978 01 May 1981  
Apache T-ATF 172 Marinette Atlantic 27 Feb 1978 23 Jul 1981  
 
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