December 9th - On This Date - RN Submarine Service

1905	B2	Submarine HMS B2 completed
1905	C7	Submarine HMS C7 laid down
1914	E13	Submarine HMS E13 completed
1915	E24	Submarine HMS E24 launched
1936	Seal	Submarine HMS Seal laid down
1939	Union	Submarine HMS Union laid down
1939	Urchin	Submarine HMS Urchin laid down
1944	Scotsman	Submarine HMS Scotsman completed
1941	Porpoise	HMS Porpoise torpedoes and heavy damages the Italian passenger/cargo ship Sebastiano Venier about 5 nautical miles south of Navarino. The Sebastiano Venier is transporting more then 1800 Allied POW's. Despite the bad weather almost 1700 of these are rescued.
1942	HMS Umbra	HMS Umbra torpedoes and sinks the German merchant Süllberg south of Hammamet, Tunesia.
1943	HMS Surf	HMS Surf torpedoes and sinks the German merchant Sonia south of Lemnos Island, Greece.
1944	Porpoise	HMS Porpoise lays minefield ML 019 with 50 mines off Penang.
1944	U-387	HMS Bamborough Castle sinks U-387 off Murmansk