May 20th - On This Date - RN Submarine Service

1916	E35	Submarine HMS E35 launched
1916	K3	Submarine HMS K3 launched
1939	Taku	Submarine HMS Taku launched
1944	Supreme	Submarine HMS Supreme completed
1940	HMS Spearfish	HMS Spearfish sinks the Danish fishing vessels S.130 and S.175 with gunfire in the North Sea.
1940	HMS Tetrarch	HMS Tetrarch captures the Danish fishing vessel Emmanuel and sinks the Danish fishing vessel Terieven with scuttling charges in the North Sea west of Denmark.
1941	HMS Upholder	HMS Upholder fires four torpedoes at the Italian tanker Utilitas off Capo dell'Armi but miss the target.
1941	Urge	Whilst on Patrol along the Sicily/Gulf of Sirte route an attack was made on two escorted Italian Merchant Vessels in position 35`46'N 11`57'E. Four torpedoes were fired of which the first two hit, the third missed and the fourth one also hit. As a result the 4,857 ton PERSEO was damaged and the 5,165 ton ZEFFIRO was sunk.
1944	HMS Sceptre	HMS Sceptre torpedoes and sinks the German merchant Hochheimer off Bilbao, northern Spain. In the same attack the torpodoes miss the German patrol vessels V-402 and V-405.
1945	HMS Sea Dog	HMS Seadog sinks a Japanese sailing vessel with gunfire north of Sumatra, Netherlands East Indies.
1947	HMS Ambush	Commissioned under the command of Lieutenant Commander George E Hunt, DSO, DSC
1970	HMS Superb	Ordered from Vickers, barrow

SAB