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C1 Class, U.S. Cargo Ships


Photograph of C1-B cargo ship

U.S. Merchant Marine


Specifications:


Tonnage 7815 deadweight tons
6750 GRT
Dimensions 417'9" by 60' by 27'6"
127.3m by 18.3m by 8.4m
Maximum speed       14 knots
Machinery
1-shaft geared turbine (4000 shp)
Two Foster-Wheeler boilers
Bunkerage
857 tons
Range
13,000 nautical miles (24,000 km)
Cargo capacity
452,420 cubic feet (12,810 m3)


The C1s were standard Maritime Commission cargo ships. They were the least ambitious of the non-emergency standard types, with limited speed that made them mostly unsuitable as Navy auxiliaries. However, a few C1-Bs were converted to hospital ships.

The C1-M-AV1 subtype was somewhat smaller, had less powerful diesel machinery yielding less than 12 knots speed, and was intended for use as coastal shipping. They were based on a Baltic Coaster design and were intended for use within theater for movement between staging areas and forward positions. 65 ships of this type were allocated to the Navy as Alamosa-class cargo ships.

The ships cost about $2.1 million apiece. Production was phased out by 1944 in favor of Liberty Ships.


Production schedule

1940      
5
1941
29
1942-1945      
139

References

Ballantine (1947)

Friedman (2002)

Lane (1951)

U.S. Merchant Marine Website (accessed 2008-2-10)



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