HMS Artemis (P449)

HMS Artemis (P449) was an Amphion-class submarine of the Royal Navy, built by Scotts Shipbuilding & Engineering Co. of Greenock and launched 28 August 1946. The submarine sank while refueling in 1971, was raised and sold for breaking up in 1972.

Design
Like all Amphion-class submarines, Artemis had a displacement of 1360 t when at the surface and 1590 t while submerged. It had a total length of 293 ft, a beam of 22 ft, and a draught of 18 ft. The submarine was powered by two Admiralty ML eight-cylinder diesel engines generating 2150 hp each. It also contained four electric motors, each producing 625 hp, that drove two shafts. It could carry a maximum of 219 t of diesel, although it usually carried between 159 and 165 t.

The submarine had a maximum surface speed of 18.5 kn and a submerged speed of 8 kn. When submerged, it could operate at 3 kn for 90 nmi or at 8 kn for 16 nmi. When surfaced, it was able to travel 15200 nmi at 10 kn or 10500 nmi at 11 kn. Artemis was fitted with ten 21 inch (533 mm) torpedo tubes, one QF 4 inch naval gun Mk XXIII, one Oerlikon 20 mm cannon, and a .303 British Vickers machine gun. Its torpedo tubes were fitted to the bow and stern, and it could carry twenty torpedoes. Its complement was sixty-one crew members.

Service history
In September 1952 Artemis deployed to Canada a second time for anti-submarine training with the Royal Canadian Navy. Artemis replaced the damaged HMS Alderney (P416), which had developed issues while training with vessels of the Royal Canadian Navy off Bermuda. In 1953 she took part in the Fleet Review to celebrate the Coronation of Queen Elizabeth II.

On 1 July 1971 Artemis sank in 18 ft of water while moored at the shore establishment HMS Dolphin at Gosport during refuelling. The sub dipped by the stern (she was being prepared for fuelling using the aft externals) which filled and the sub sank. All aboard escaped, with decisive action by four crew members resulting in bravery awards. She was raised on 6 July and decommissioned, sold to be broken up for scrap on 12 December 1971.