Battleships in World War II part of Operation Neptune, in support of the D-Day landings in June 1944. D-Day also saw the deliberate sacrifice of two old dreadnoughts ( and ), which were scuttled as part of the breakwater around the Allied Mulberry harbours. The sinking of "Prince of Wales" and "Repulse" off the coast of Malaya in 1941 demonstrated that even the most modern battleships could not hold off aerial attacks without decent aerial defenses. The British HACS fire control system had been rendered inoperable by the extreme heat and humidity of the Malaya tropical climate, and the anti-aircraft artillery had managed to shoot
HMS Hydra (J275) naval part of the D-Day landings at Normandy on 6 June 1944. She was mined in the approaches to Ostend on 10 November 1944. She was towed to Sheerness but declared a constructive total loss and not repaired. She was sold for scrap and arrived at the yard of Thos W Ward in Grays, Essex to be broken up in 1947. HMS Hydra (J275) HMS "Hydra" was a reciprocating engine-powered built for the Royal Navy during the Second World War. She was badly damaged during the war and was scrapped in 1947. The reciprocating group displaced at standard load and