Crater-class cargo ship

USS Livingston (AK-222)
Class overview
Operators	United States Navy
Built	1942–1944
In commission	1942–1948
Completed	63
General characteristics
Type	Cargo ship
Displacement	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
Armament	1 × 5"/38 caliber gun 1 × 3"/50 caliber gun 2 × 40 mm guns 6 × 20 mm guns or 1 × 5"/38 caliber gun 4 × 40 mm guns 12 × 20 mm guns

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. 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.

External links

• AK — Cargo Ships—Ships of the U.S. Navy, 1940-1945.