February 23rd - OnThis Date - RN Submarine Service

1907	C3	Submarine HMS C3 completed
1910	D5	Submarine HMS D5 laid down
1917	K12	Submarine HMS K12 launched
1948	Artful	Submarine HMS Artful completed
1941	HMS Upright	HMS Upright torpedoes and sinks the Italian merchant Silvia Tripcovich about 60 nautical miles north-east of Sfax, Tunisia.
1942	HMS Trident	HMS Trident sights heavy cruiser KMS Prinz Eugen in the North Sea and fires three torpedoes; one of which hits aft, damaging Prinz Eugen's rudder and blowing away 30 feet of her stern. She is taken into Lo Fjord at Drontheim, and temporary repairs (including the fitting of two jury rudders) is completed by the beginning of May
1942	HMS P38	HMS P38 left Malta on 16th February 1942 to intercept a convoy off Tripoli. By the 23rd she was in position as the convoy hove into view. Amongst the convoy was the Italian destroyer Circe. At 0800 the Circe reported contact with a submarine and the warships turned to attack. A periscope was sighted but was quickly replaced by bubbles as the submarine dived realising it had been spotted. At 1050 after a flurry of attacks HMS P38 rose stern first out of the water, her propellers turning wildly, before crashing back beneath the waves. A large patch of oil appeared on the surface as well as debris - clear evidence of the submarines destruction.
1942	HMS Ultimatum	HMS Ultimatum fires 4 torpedoes against the Italian merchants Ravello and Unione about 80 nautical miles east of Tripoli, Libya. All torpedoes fired missed.
1945	HMS Sea Scout	HMS Sea Scout sinks two Japanese sailing vessels with gunfire in the Strait of Malacca.
1945	HMS Thorough	HMS Thorough sinks two Japanese sailing vessels, a coaster and a barge with gunfire of the west coast of Siam.

SAB