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 HMS Excalibur (S40)
| |
| History | |
|---|---|
 United Kingdom | |
| Name | Excalibur |
| Ordered | 26 August 1947 |
| Builder | Vickers Armstrong[1] |
| Launched | 25 February 1955 |
| Completed | 22 February 1958 |
| Identification | Pennant number: S40 |
| Nickname(s) | The Excruciator[2] |
| Fate | Scrapped, 1968 |
| Notes | Built at a cost of £1,142,000 |
| General characteristics | |
| Class and type | Explorer-class submarine |
| Displacement | |
| Length | 178 ft (54 m) |
| Beam | 15 ft 8 in (4.78 m) |
| Draught | 11 ft (3.4 m) |
| Propulsion |
|
| Speed | 25 knots (46 km/h; 29 mph) (submerged) |
| Complement | 41 |
| Armament | None |
HMS Excalibur was an Explorer-class submarine, the sister ship of HMS Explorer, the two submarines being the only high-test peroxide (HTP) powered submarines to be constructed for the Royal Navy. She is the only ship to be named as such, in honour of the sword of Arthurian legend.