July 15th - On This Date - RN Submarine Service

1916	K4	Submarine HMS K4 launched
1919	H49	Submarine HMS H49 launched
1970	Churchill	Submarine HMS Churchill completed
1916	HMS H3	Mined attempting to penetrate the Austrian anchorage at Cattaro in the Adriatic sea. Lost with all hands.
1941	HMS Taku	HMS Taku sinks the Italian auxiliary minesweeper Vincenso P. about 25 nautical miles south-east of Auegia, Libya.
1941	HMS Unbeaten	HMS Unbeaten sinks two sailing vessels with gunfire at Marsa Zuag roads, Libya.
1941	HMS P33	HMS P 33 torpedoes and sinks the Italian merchant Barbarigo off Pantellaria Island. During a counter attack P 33 was damaged by the Italian torpedo boat Procione.
1943	HMS United	The Italian submarine Remo was torpedoed and sunk in the Gulf of Taranto by the British submarine HMS United
1945	HMS Supreme	HMS Supreme sinks three Japanese coasters with gunfire in the Gulf of Siam.
1945	HMS Trenchant	HMS Trenchant sinks three small Japanese vessels with gunfire north-east of the Lombok Strait.
1971	Dolphin badges	Submarine Dolphin badges first issued.

SAB