January 11th - On This Date

1915	H1	Submarine HMS H1 laid down
1915	H2	Submarine HMS H2 laid down
1915	H3	Submarine HMS H3 laid down
1915	H4	Submarine HMS H4 laid down
1915	H5	Submarine HMS H5 laid down
1916	G10	Submarine HMS G10 launched
1964	Osiris	Submarine HMS Osiris completed
1942	Porpoise	HMS Porpoise lays 50 mines off Suda Bay, Crete.
1943	HMS Sahib	HMS Sahib torpedoes and damages the German transport San Antonio about 15 nautical miles east of San Remo.
1943	HMS Tribune	HMS Tribune again torpedoes and damages the (now beached) French merchant Dalny off Cape Cervo, Sardinia, Italy.
1943	HMS Turbulent	HMS Turbulent torpedoes and sinks the Italian merchant Vittoria Beraldo near Cattaro, Yugoslavia.
1943	HMS Umbra	HMS Umbra damages the Italian sailing vessels Nuovo Domenico and Concetta Falco with gunfire in the Gulf of Hammamet.
1944	HMS Tally Ho	HMS Tally Ho, one of the Royal Navy submarine flotilla based at Trincomalee, caught the Japanese light cruiser Kuma in the Malacca Strait, one of the very few large Japanese warships then operating in the area, and sank her with two torpedo hits.
1944	HMS Unruly	HMS Unruly sinks four sailing vessels with gunfire off Andros Island and Tinos Island, Greece.