HMS Ambush (S120)

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BAE Systems' Artist Impression
Career Royal Navy Ensign
Ordered: March 1997
Laid down: October 2003
Launched: 2007-2008 (planned)
Commissioned: 2010 (planned)
Fate: Under construction
General characteristics
Displacement: 7,800 tonnes submerged
Length: 97 m (323 ft)
Beam: 11.3 m (37 ft)
Draught: 10 m (33 ft)
Propulsion: Rolls-Royce PWR2 reactor (with full submarine life core), MAN (Paxman) 1900 kilowatt diesel generator
Speed: 29 knots (54 km/h) submerged
Range: 7,000 nautical miles / 13 000 km (at economical speed)
Complement: 98 officers and men normally, capacity of 109
Sensors and
processing systems:
Thales Underwater Systems Sonar 2076, Atlas Hydrographic DESO 25 depth-finding echosounder, Two Thales Optronics CM010 periscopes, Raytheon Systems Ltd Successor IFF system
Armament: six 21 inch (533 mm) torpedo tubes, 38 Spearfish torpedoes, UGM-84 Harpoon and Tomahawk Block IV cruise missiles, naval mines

HMS Ambush (S120) (possibly S21) is a proposed Astute-class nuclear Fleet submarine of the Royal Navy. Ambush was ordered from GEC's Marconi Marine (now BAE Systems Submarine Solutions) on March 17, 1997. She was laid down at Barrow-in-Furness on 23 October 2003 and is expected to enter service in 2010.

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