U.S. Life-Saving Service and U.S. Coast Guard Rescue Craft History
Tim Dring, Commander, U.S. Naval Reserve-Retired
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Mark I Version

Utility Boat-Large (40ft.)

Self-bailing, but not self-righting; 40ft. 3in. overall length, 11ft. 2 ¾in. beam, 38in. draft; 24,100-27,000lbs. full load displacement; twin General Motors diesel engines with twin propellers; maximum speed about 20kts.; 240gal. fuel; maximum range at 15kt. cruise speed about 200 nautical miles; wooden hull and superstructure, or welded steel hull and aluminum superstructure, or fiberglass hull and superstructure. There were several specific models of this boat, with the Mark I built of wood or steel, the Mark IV built of steel, and the Mark V and VI built of fiberglass. Most of these boats were built by the Coast Guard’s Curtis Bay Yard over the period 1950 to 1966.
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