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On This Day - January 15

1920 P 554 Launched
1938 Orzel (85 A) (Polish) Launched
1941 Regent (N 41) HMS Regent torpedoes and sinks the Italian merchant Citt di Messina about 45 nautical miles east of Tripoli, Libya.
1943 Splendid (P 228) HMS Splendid torpedoes and sinks the Italian merchant Emma about 15 nautical miles south-west of Isola di Capri, Italy.
1944 Tally-Ho (P 317) HMS Tally Ho, on her third patrol and cruising the waters around the Andaman Islands, fires six torpedoes at what is believed to be a motor vessel. One torpedo hits & sinks Ryuko Maru south of Port Blair
1944 Unruly (P 49) HMS Unruly sinks the Greek sailing vessel Aghios Giorgios with gunfire north of Syros Island, Greece.
1944 Unsparing (P 55) HMS Unsparing sinks two Greek sailing vessels with gunfire off Lemnos Island, Greece
1955 Rorqual (S 02) Laid Down

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Triton (N 15)

Class: 1935 - 1970: T Class
Built By: Vickers (Barrow)
Build Group: T 1
Fate:
On 28 November 1940, Triton left Malta for a patrol in the southern Adriatic Sea. On 6 December, the Italian merchant Olimpia was torpedoed by a British submarine in the area. Her distress message was picked up by the Royal Navy, which assumed that the attack had been carried out by Triton.

The submarine was never heard from again, and was declared lost with all hands on 18 December. Olimpia was successfully towed to port by Italian escort units.

The Italian Navy claimed that Triton was sunk by torpedo boats, probably Confienza, possibly by Clio, but the date cited was several days after contact was lost.

British sources claimed that Triton was sunk by naval mines in the Strait of Otranto
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This volume looks at the history and role of the submarine in the modern navy. Starting out as experimental oddities in the American Civil War, the most advanced submarines in the present day hold a crew of several hundred, can remain at sea for a year at a time, and are capable of launching dozens of thermonuclear missles at any spot in the world.
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