Westland Whirlwind (helicopter)
The Westland Whirlwind helicopter was a British licence-built version of the U.S. Sikorsky S-55/H-19 Chickasaw. It primarily served with the Royal Navy's Fleet Air Arm in anti-submarine and search and rescue roles.
Read more about Westland Whirlwind (helicopter): Design and Development, Variants, Operators, Survivors, Specifications (Whirlwind HAS.7)