| HMS Narwhal|| 25 October 1957|
| Vickers-Armstrongs, Barrow-in-Furness|
Sunk as a target on 3 August 1985
Porpoise class submarine
2,080 tons surfaced
2,450 tons submerged
Colledge, J. J.; Warlow, Ben (2006) . Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8. OCLC 67375475.
HMS Narwhal (S03) Wikipedia
HMS Narwhal (S03) was a Porpoise class submarine of the Royal Navy. She was launched on 25 October 1957.
Narwhal ran aground at the entrance to Campbeltown Loch, Scotland, on 4 April 1960. She was refloated the next day.
In 1970 she was present at Portsmouth Navy Days.
She was scuttled as a target on 3 August 1985 and lies in the English Channel.