| Manufacturer | Westland |
| Model | Weasel |
| Modification | Weasel |
| Country | United Kingdom |
| Years | 1918 |
| Type | Fighter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 10.82 m |
| Length | 7.57 m |
| Height | 3.07 m |
| Wing area | 34.19 m2 |
| Zero fuel weight | - |
| Empty weight | 738 kg |
| Maximum takeoff weight | 1393 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 1 ABC Dragonfly |
| Power | 1 x 340 HP |
| Thrust | - |
| Maximum speed | 209 km/h |
| Cruising speed | 176 km/h |
| Rate of climb | - |
| Practical range | 580 km |
| Service ceiling | 6736 m |
| Hovering ceiling | - |
| Crew | - |
