HMS Cachalot

Two ships of the Royal Navy have borne the name HMS Cachalot, after the marine mammal, the cachalot, or sperm whale:


 * HMS Cachalot (N83) was a Grampus class submarine launched in 1937 and rammed and sunk by an Italian torpedo boat in 1941.
 * HMS Cachalot (S06) was a Porpoise class submarine launched in 1957 and sold for scrapping in 1979.