The Westland Wessex HC.2 was a turbine-powered version built under licence, derived from the renowned American Sikorski S-58 'Choctaw' helicopter. It was one of the pioneering helicopters that proved indispensable for numerous military and civilian uses.

Continuing a collaboration between Sikorsky and Westland, the Wessex was first developed for the Royal Navy for anti-submarine and utility missions. It was later adapted as the HC.2 for the Royal Air Force, entering service in 1962, a year after the Navy's version.

In the RAF, these robust helicopters undertook various duties, such as transporting troops and supplies, providing ground support, and conducting air evacuations. However, their role in Air Sea Rescue operations made them particularly prominent at the time.

Upon its introduction, the Wessex was at the forefront of rotary technology, capable of operating in environments inaccessible to other aircraft.