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| Engine: | 1 x Napier Gazelle Mk.161 1450shp | | Capacity: | 4 | | Length: (m) | 20.03 | | Height: (m) | 4.39 | | Blades: | 4 | | Rotor diam.: (m) | 17.07 | | Disc area: (m2) | 228.85 | | Weight: (kgs) | Empty: 3447 Max: 5715 | | Speed: (km/h) | Cruise: 195 Max: 212 | | Range: (km) | 630 | | Ceiling: (m) | 4300 | | Rate/Climb: (m/min) | 475 |
List of Operators of Westland Wessex HAS.1 | |
| From | Organisation with model Wessex HAS.1 | | 1956 | | | 1958 | | | 1961 | | | 1983 |
| | Construction Numbers on database of Wessex HAS.1 |
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