Aircraft Data Sheet: WS-58 Wessex MK 1 (1957)

WS-58 Wessex MK 1
First flight: 17th May 1957.
Rotor diameter: 17.07m/56ft 0ins
Length: 20.04m/65ft 9ins
Max weight: 5,715 kg/12,600
Max speed: 212 kph/115knots
Power: One 1,450shp/1,085kW
Napier Gazelle 161
(N Ga 13 Turboshaft)
Accommodation: Pilot plus three (ASW)
No Built: 167

The adoption of the Sikorsky S-58 and its complete re-design, served to strengthen the Westland design team even further. The result was a general purpose and anti-submarine helicopter, using the Sikorsky S-58 airframe and transmission, modified to accept a turboshaft engine, full autopilot and Active Dunking Sonar for service with the Royal Navy. A number of Mk 1 aircraft were adapted to operate in the commando role.