Thursday, July 28, 2016

41-11-13 HMS Ark Royal 41-11-14

HMS Ark Royal (91) > .
Strait of Gibraltar - Chink in Armor >> .

HMS Ark Royal (pennant number 91) was an aircraft carrier of the Royal Navy that served during WW2.

Designed in 1934 to fit the restrictions of the Washington Naval Treaty, Ark Royal was built by Cammell Laird at Birkenhead, England, launched on 13 April 1937, and completed in November 1938. Her design differed from previous aircraft carriers. Ark Royal was the first ship on which the hangars and flight deck were an integral part of the hull, instead of an add-on or part of the superstructure. Designed to carry a large number of aircraft, she had two hangar deck levels. She served during a period that first saw the extensive use of naval air power; several carrier tactics were developed and refined aboard Ark Royal.

Ark Royal served in some of the most active naval theatres of the Second World War. She was involved in the first aerial and U-boat kills of the war, operations off Norway, the search for the German battleship Bismarck, and the Malta Convoys.

Ark Royal survived several near misses and gained a reputation as a 'lucky ship'. She was torpedoed on 13 November 1941 by the German submarine U-81 and sank the following day; one of her 1,488 crew members was killed. Her sinking was the subject of several inquiries; investigators were keen to know how the carrier was lost, in spite of efforts to save the ship and tow her to the naval base at Gibraltar. They found that several design flaws contributed to the loss, which were rectified in new British carriers. The lack of backup power sources was a major design failure, which contributed to the loss: Ark Royal depended on electricity for much of her operation, and once the boilers and steam-driven dynamos were knocked out, the loss of power made damage control difficult. The committee recommended the design of the bulkheads and boiler intakes be improved to decrease the risk of widespread flooding in boiler rooms and machine spaces, while the uninterrupted boiler room flat was criticised. The design flaws were rectified in the Illustrious- and Implacable-class carriers, under construction at the time.

The wreck was discovered in December 2002 by an American underwater survey company using sonar mounted on an autonomous underwater vehicle, under contract from the BBC for the filming of a documentary about the ship, at a depth of about 1,000 metres (3,300 ft) and approximately 30 nautical miles (56 km; 35 mi) from Gibraltar.


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