HMS Ambush (P418)

HMS Ambush (P418/S68/S18), was an Amphion-class submarine of the Royal Navy, built by Vickers Armstrong and launched 24 September 1945.

For other ships with the same name, see HMS Ambush.

HMS Ambush (P418/S68)
History
United Kingdom
OrderedVery late in World War II
BuilderVickers Armstrong, Barrow-in-Furness
Laid down17 May 1945
Launched24 September 1945
Commissioned22 July 1947
DecommissionedNovember 1967
FateSold to be broken up for scrap on 24 June 1971. Scrapped at Thos. W. Ward Inverkeithing in July 1971.
General characteristics
Displacement1,360/1,590 tons (surface/submerged)
Length293 ft 6 in (89.46 m)
Beam22 ft 4 in (6.81 m)
Draught18 ft 1 in (5.51 m)
Propulsion2 × 2,150 hp Admiralty ML 8-cylinder diesel engine, 2 × 625 hp electric motors for submergence driving two shafts
Speed18.5/8 knots (surface/submerged)
Range
  • 10,500 nautical miles (19,400 km) at 11 knots (20 km/h) surfaced
  • 16 nautical miles (30 km) at 8 knots (15 km/h) or 90 nautical miles (170 km) at 3 knots (6 km/h) submerged
Test depth350 ft (110 m)
Complement60
Armament
  • 6 × 21 inch (533 mm) (2 external) bow torpedo tube, 4 × 21" (2 external) stern torpedo tube, containing a total of 20 torpedoes
  • Mines: 26
  • 1 × 4" main deck gun, 3 × 0.303 machine gun, 1 × 20 mm AA Oerlikon 20 mm gun

In 1948 she took part in trials of the submarine snorkel. In 1951 she heard and decoded a distress message from HMS Affray, which was sunk with the ultimate loss of all 75 hands. In 1953 she took part in the Fleet Review to celebrate the Coronation of Queen Elizabeth II.

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