LST-511 Class Tank Landing Ship:
- Laid down, 22 September 1943, at Missouri Valley Bridge and Iron Co., Evansville, IN.
- Launched, 24 November 1943
- Commissioned USS LST-531, 17 January 1944
- During World War II USS LST-531 was assigned to the European-Africa-Middle East Theatre
- Sunk by a German E-Boat torpedo attack off Slapton Sands, England, 28 April 1944, during Operation Tiger, the rehearsal for the Normandy invasion
- Struck from the Naval Register, 9 June 1944
Specifications: (as reported by Office of Naval Intelligence-1945) Displacement: 1,625 t.(lt), 4,080 t.(fl) (sea-going draft w/1675 ton load); Length: 328′ o.a.; Beam: 50′; Draft: (light) – 2′ 4″ fwd, 7′ 6″ aft, (sea-going) 8′ 3″ fwd, 14′ 1″ aft, (landing) 3′ 11″ fwd, 9′ 10″ aft (landing w/500 ton load); Speed: 12 kts. (maximum); Endurance: 24,000 miles @ 9kts. while displacing 3960 tons; Complement: nine officers, one hundred and twenty enlisted; Troop Accommodations: fourteen officers, one hundred and thirty one enlisted; Boats: six LCVP; Cargo Capacity (varied with mission – payloads between 1600 and 1900 tons) Typical loads: One Landing Craft Tank (LCT), tanks, wheeled and tracked vehicles, artillery, construction equipment and military supplies. A ramp or elevator forward allowed vehicles access to tank deck from main deck. Additional capacity included sectional pontoons carried on each side of vessel amidships, to either build Rhino Barges or use as causeways. Married to the bow ramp, the causeways would enabled payloads to be delivered ashore from deeper water or where a beachhead would not allow the vessel to be grounded forward after ballasting; Armament (varied with availability when each vessel was outfitted. Retro-fitting was accomplished throughout WWII. The ultimate armament design for United States vessels was: two twin 40mm gun mounts w/Mk.51 directors, four single 40mm gun mounts and twelve single 20mm gun mounts.
Data courtesy of NavSource Naval History.