Anchorite had a displacement of 1,360 long tons (1,380 t) when at the surface and 1,590 long tons (1,620 t) while submerged. It had a total length of 293 ft 6 in (89.46 m), a beam of 22 feet 4 inches (6.81 m), and a draught of 18 feet 1 inch (5.51 m). The submarine was powered by two Admiralty ML eight-cylinder diesel engines generating 2,150 horsepower (1,600 kW) each. Four electric motors each producing 625 horsepower (466 kW) drove two shafts.[2] It could carry a maximum of 219 long tons (223 t) of diesel, although it usually carried between 159 and 165 long tons (162 and 168 t).[2]
The submarine had a maximum surface speed of 18.5 knots (34.3 km/h) and a submerged speed of 8 knots (15 km/h).[3] When submerged, it could operate at 3 knots (5.6 km/h) for 90 nautical miles (170 km) or at 8 knots (15 km/h) for 16 nautical miles (30 km). When surfaced, it was able to travel 15,200 nautical miles (28,200 km) at 10 knots (19 km/h) or 10,500 nautical miles (19,400 km) at 11 knots (20 km/h).[2]Anchorite 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 BritishVickers 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.[2]
During build and before launch the names of Anchorite and HMS Amphion were switched. In 1953 she took part in the Fleet Review to celebrate the Coronation of Queen Elizabeth II.[5]