HMS Artful (P456), was an of the Royal Navy, built by Scotts Shipbuilding and Engineering Company of Greenock and launched 22 May 1944.
In 1953 she took part in the Fleet Review to celebrate the Coronation of Queen Elizabeth II. In 1955 she was the first of her class to be rebuilt and streamlined. In 1966 she completed a refit and recommissioned for service with the Home Fleet. In 1967 she undertook a Home Fleet Squadron tour to the West Indies and later that year attended Portsmouth Navy Days.
Like all Amphion-class submarines, Artful had a displacement of when at the surface and while submerged. She had a total length of , a beam of , and a draught of . The submarine was powered by two Admiralty ML eight-cylinder diesel engines generating a power of each. She also contained four electric motors each producing that drove two shafts. She could carry a maximum of of diesel, although she usually carried between .
The submarine had a maximum surface speed of and a submerged speed of . When submerged, she could operate at for or at for . When surfaced, she was able to travel at or at . She was fitted with ten torpedo tubes, one QF 4 inch naval gun Mk XXIII, one Oerlikon 20 mm cannon, and a .303 British Vickers machine gun. Her torpedo tubes were fitted to the bow and stern, and she could carry twenty torpedoes. Her complement was sixty-one crew members.