Westland Sea King Mk.43B, Luftforsvaret (Royal Norwegian Air Force)

Helicopter Westland Sea King Mk.43B Serial wa1005 Register 322 used by Luftforsvaret (Royal Norwegian Air Force). Built 1990.

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The Westland WS-61 Sea King is a British licence-built version of the American Sikorsky S-61 helicopter of the same name, built by Westland Helicopters. The aircraft differs considerably from the American version, with Rolls-Royce Gnome engines (derived from the US General Electric T58), The Sea King was primarily designed for performing anti-submarine warfare (ASW) missions.

Westland also manufactured SAR versions of the Sea King for the Royal Norwegian Air Force, the German Navy and the Belgian Air Force. On SAR variants, the cabin was enlarged by a stretch of the fuselage behind the door; another key feature, used for additional flotation in the unusual event of a water landing, inflatable buoyancy bags were housed inside the aircraft's sponsons. Upgrades and changes made to SAR Sea Kings include the addition of radar warning receivers, a cargo hook for the underslung carriage of goods, and the redesigning of the cockpit for compatibility with night vision goggles.

The Sea King has its origins in efforts by the United States Navy as a means of counteracting the growing threat of Soviet submarines during the 1950s. Accordingly, the helicopter was specifically developed to deliver a capable ASW platform; in particular, it combined the roles of hunter and killer, which had previously been carried out by two separate helicopters.

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