High Quality Content by WIKIPEDIA articles! HMS Finwhale (S05) was a Porpoise class submarine of the Royal Navy. She was launched on the 21st July 1959. While in the Far East she was fitted with an oerlikon deck gun. She was used as a harbour training vessel between 1979 and 1987. She left under tow for scrapping in Spain on 28 March 1988. She has been the only ship of the Royal Navy to be named after the Fin Whale.