| Manufacturer | Westland |
| Model | Dreadnought |
| Modification | Dreadnought |
| Country | United Kingdom |
| Years | 19 |
| Type | Experimental aircraft |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 21.18 m |
| Length | 17.07 m |
| Height | 4.98 m |
| Wing area | 78.04 m2 |
| Zero fuel weight | - |
| Empty weight | 2551 kg |
| Maximum takeoff weight | 3130 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 1 Napier Lion II |
| Power | 1 x 450 HP |
| Thrust | - |
| Maximum speed | 190 km/h |
| Cruising speed | 161 km/h |
| Rate of climb | - |
| Practical range | - |
| Service ceiling | - |
| Hovering ceiling | - |
| Crew | - |
