Ships of the U.S. Navy, 1940-1945 AH-12 USS Haven Haven class Hospital Ship: Displacement: 15, 000 tons (full load) Length: 520' Beam: 71'6 Draft: 23'6 Speed: 17.5 knots (max); Armament: NONE Complement: ; 800 patients Geared turbine engines; single screw; Built at Sun Shipbuilding, Chester, Penn., and commissioned 5 May 1945 Additional Links: Dictionary of American Naval Fighting Ships -- USS ...