December 7th - On This Date - RN Submarine Service

1944	XE12	Submarine HMS XE12 completed
1907	C14	Submarine HMS C14 launched
1906	C15	Submarine HMS C15 laid down
1915	G6	Submarine HMS G6 launched
1914	E35	Submarine HMS E35 laid down
1917	R10	Submarine HMS R10 laid down
1930	Regulus	Submarine HMS Regulus completed
1937	Thistle	Submarine HMS Thistle laid down
1938	Trident	Submarine HMS Trident launched
1941	Uredd	Submarine HMS Uredd completed
1940	HMS Sunfish	HMS Sunfish torpedoes and damages the Norwegian merchant Dixie off Stadlandet, Norway.
1941	Pearl Harbour	On the morning of 7th December 1941, the US Fleet suffered more damage in one hour than during the whole of the First World War, when Japanese aircraft bombed Pearl Harbour - the United States' largest naval base - and the airfields which were an essential part of its defences. The attack lasted from 7.55 am to 9.15 am, and initiated the Pacific Ocean as one of the war's major battlegrounds.
1941	HMS Uredd	P41 is taken over by the Royal Norwegian Navy, and christened Uredd.
1941	HMS Truant	HMS Truant fires two torpedoes against the German merchant Bellona off Suda Bay, Crete, Greece. Both torpedoes missed their target.
1942	HMS Tuna	HMS Tuna delivered the "Cockleshell Heroes" to the mouth of the Gironde for their daring raid on Bordeaux, France in which 6 German ships were mined. The raid was called Operation Frankton, and only two of the 12 men returned..
1944	HMS Stygian	HMS Stygian sinks a Japanese vessel with gunfire in the Strait of Malacca.
1944	HMS Sea Rover	HMS Sea Rover sinks a Japanese vessel with gunfire off Surabaya, Java, Netherlands East Indies.