June 16th - On This Date - RN Submarine Service

1914	E9	Submarine HMS E9 completed
1923	X1	Submarine HMS X1 launched
1940	HMS Grampus	Lost while minelaying off Augusta, Sicily On the 10th June 1940 HMS Grampus sailed from Malta to lay mines off the port of Augusta. Three days later she reported this had been done successfully but nothing further was heard and she did not return from the patrol. It is believed that the Italian Navy sank her on the 16th June. At 1900 on the 16th the Torpedo Boat Circe spotted a periscope and launched a depth charge attack on the position, along with the Polluce. The ninth depth charge pattern destroyed Grampus, which gave up a mass of wreckage.
1940	HMS Tetrarch	HMS Tetrarch torpedoes and sinks the German tanker Samland south-west of Lista, Norway.
1941	HMS Unbeaten	While on patrol south of the Messina Strait HMS Unbeaten fires torpedoes at a big Italian troop transport. The torpedoes miss the target.
1943	HMS Unison	HMS Unison torpedoes and sinks the Italian merchant Terni off Catania, Sicily, Italy.
1944	Sickle	Believed lost when she struck a mine in the Kythera Channel. Sickle was the last British submarine to be lost in the Mediterranean during WW2
1945	Vigorous	HMS Vigorous damages a Japanese coaster with gunfire north of Sumatra, Netherlands East Indies.
1955	Sidon	12 men died and 7 injured in explosion aboard HMS Sidon.
1969	Repulse	Submarine Repulse sails on her first Polaris Patrol

SAB