May 21st - On This Date - RN Submarine Service

1915	K3	Submarine HMS K3 laid down
1942	Unshaken	Submarine HMS Unshaken completed
1943	Vineyard	Submarine HMS Vineyard laid down
1943	Variance	Submarine HMS Variance laid down
1941	Urge	An attack was made on two Italian Cruisers escorted by three destroyers and a torpedo boat in position 35`30'N 12`25'E both of the Cruisers were missed however the 1,200 ton Destroyer CURTATONE,which was one of the escorts was sunk.
1943	Sickle	HMS Sickle attacked U-755 but missed. Sickle then torpedoed & sank U-303 south of Toulon
1943	HMS Unbroken	HMS Unbroken torpedoes and sinks the Italian merchant Bologna 8 nautical miles off Capo Vaticano.
1944	Upstart	HMS Upstart torpedoes and sinks the German merchant Tolentino half a mile east of Port Vendres, southern France.
1968	USS Scorpion	The nuclear-powered US submarine Scorpion, with 99 men aboard, was last heard from. (The remains of the sub were later found on the ocean floor 400 miles SW of the Azores)
1998	HMCS Ojibwa	HMCS Ojibwa was paid off to alongside training

SAB