Victory ships
SS Red Oak Victory, now a museum ship.
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| Class overview | |
|---|---|
| Name: | Victory ship |
| Builders: | 6 shipyards in the US |
| Planned: | 615 |
| Completed: | 534 |
| Cancelled: | 81 |
| Preserved: | 3 |
| General characteristics | |
| Class and type: | Cargo ship |
| Tonnage: | |
| Displacement: | 15,200 tons (at 28-foot draft) |
| Length: | 455 ft (138.7 m) |
| Beam: | 62 ft (18.9 m) |
| Draft: | 28 ft (8.5 m) |
| Depth of hold: | 38 ft (11.6 m) |
| Speed: | 15–17 knots (28–31 km/h) |
The Victory ship was a class of cargo ship produced in large numbers by North American shipyards during World War II to replace losses caused by German submarines. They were a more modern design compared to the earlier Liberty ship, were slightly larger and had more powerful steam turbine engines giving higher speed to allow participation in high speed convoys and make them more difficult targets for German U-boats. A total of 531 Victory ships were built.
One of the first acts of the United States War Shipping Administration upon its formation in February 1942 was to commission the design of what came to be known as the Victory class. Initially designated EC2-S-AP1, where EC2 = Emergency Cargo, type 2 (Load Waterline Length between 400 and 450 feet (120 and 140 m)), S = steam propulsion with one propeller (EC2-S-C1 had been the designation of the Liberty ship design), it was changed to VC2-S-AP1 before the name "Victory Ship" was officially adopted on 28 April 1943.
The design was an enhancement of the Liberty ship, which had been successfully produced in extraordinary numbers. Victory ships were slightly larger than Liberty ships, 14 feet (4.3 m) longer at 455 feet (139 m), 6 feet (1.8 m) wider at 62 ft (19 m), and drawing one foot more at 28 feet (8.5 m) loaded. Displacement was up just under 1,000 tons, to 15,200. With a raised forecastle and a more sophisticated hull shape to help achieve the higher speed, they had a quite different appearance from Liberty ships.
To make them less vulnerable to U-boat attacks, Victory ships made 15 to 17 knots (28 to 31 km/h), 4 to 6 knots (7.4 to 11.1 km/h) faster than the Libertys, and had longer range. The extra speed was achieved through more modern, efficient engines. Rather than the Libertys' 2,500 horsepower (1,900 kW) triple expansion steam engines, Victory ships were designed to use either Lentz type reciprocating steam engines, steam turbines or Diesel engines, variously putting out between 6,000 and 8,500 hp (4,500 and 6,300 kW). Most used steam turbines, which had been in short supply earlier in the war and reserved for warships. All were oil-fired, but for a handful of Canadian vessels completed with both coal bunkers and oil tanks. Another improvement was electrically powered auxiliary equipment, rather than steam-driven machinery.
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Wikipedia