Crater-class cargo ship

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USS Livingston AK-222
USS Livingston (AK-222)
Class overview
Operators:  United States Navy
Built: 1942–1944
In commission: 1942–1948
Completed: 63
General characteristics
Type: Cargo ship
  • 4,023 long tons (4,088 t) light
  • 11,565 long tons (11,751 t) full
Length: 441 ft 6 in (134.57 m)
Beam: 57 ft (17 m)
Draft: 30 ft (9.1 m)
Propulsion: Single-shaft, reciprocating engine, 1,950 hp (1,454 kW)
Speed: 11.5 knots (13.2 mph; 21.3 km/h)
Complement: 206

Crater-class cargo ship is a category of EC2-S-C1 type liberty ship freighters constructed by the United States Maritime Commission for use by the U.S. Navy during World War II.[1] The designation 'EC2-S-C1' was composed of 'EC' (for Emergency Cargo), '2' (for a ship between 400 and 450 feet (120 and 140 m) long (Load Waterline Length)), 'S' (for steam engines), and 'C1' for a Type C1 ship.

The class was named for the lead ship of its type, USS Crater (AK-70). Its 62 hulls was the largest among U.S. Navy cargo ship classes.

The ships were propelled by a reciprocating steam engine using a single screw with a power of 1,950 hp (1,454 kW) shaft.


  1. ^ "Crater Class, U.S. Cargo Ships". The Pacific War Online Encyclopedia. Retrieved April 15, 2014. 

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