HMS Impregnable (1786)
HMS Impregnable on 17 August 1789, when King George III visited the ship  | |
| History | |
|---|---|
| Great Britain | |
| Name | HMS Impregnable | 
| Ordered | 13 September 1780 | 
| Builder | Deptford Dockyard | 
| Laid down | October 1781 | 
| Launched | 15 April 1786 | 
| Fate | Wrecked 18 October 1799 | 
| Notes | 
  | 
| General characteristics | |
| Class & type | London-class ship of the line | 
| Tons burthen | 188647⁄94 (bm) | 
| Length | 177 ft 6 in (54.10 m) (gundeck) | 
| Beam | 49 ft (15 m) | 
| Depth of hold | 21 ft (6.4 m) | 
| Propulsion | Sails | 
| Sail plan | Full-rigged ship | 
| Armament | 
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HMS Impregnable was a Royal Navy 98-gun second rate ship of the line launched on 15 April 1786 at Deptford Dockyard. She was wrecked in 1799 off Spithead.