HMS Narwhal

Three ships of the Royal Navy have borne the name HMS Narwhal, after the marine mammal, the narwhal:

• HMS Narwhal was an M class destroyer launched in 1915. She was involved in a collision in 1919 that broke her back, and was broken up in 1920.
• HMS Narwhal was a Grampus class submarine launched in 1935 and lost to an unknown cause in 1940.
• HMS Narwhal was a Porpoise class submarine launched in 1957 and sunk as a target in 1983.