Astute-class submarine

	Astute-class SSN profile
	HMS Ambush in 2012
Class overview
Name	Astute class
Builders	BAE Systems Submarines, Barrow-in-Furness
Operators	Royal Navy
Preceded by	Trafalgar class
Succeeded by	Aukus-class submarine (First design contract awarded)
Cost	Over £1.65 billion per boat (2015 est.)
Built	2001–present
In commission	2010–present
Planned	7
Building	2
Completed	5
Active	5
General characteristics
Type	Nuclear-powered fleet submarine
Displacement	Surfaced: 7,000 to 7,400 t (6,900 to 7,300 long tons); Submerged: 7,400 to 7,800 t (7,300 to 7,700 long tons);
Length	97 m (318 ft 3 in)
Beam	11.3 m (37 ft 1 in)
Draught	10 m (32 ft 10 in)
Propulsion	1 × Rolls-Royce PWR 2 nuclear reactor; MTU 600 kilowatt diesel generators;
Speed	30 knots (56 km/h; 35 mph), submerged
Range	Unlimited
Endurance	Unlimited in terms of propulsion, air and water, but otherwise typically 90 days, based on the amount of food carried and endurance of the crew
Test depth	Over 300 m (980 ft)
Complement	98 (capacity for 109)
Sensors and ; processing systems	Thales Sonar 2076; Atlas DESO 25 echosounder; 2 × Thales CM010 optronic masts; Raytheon Successor IFF;
Armament	6 × 21 in (533 mm) torpedo tubes with stowage for up to 38 weapons:; Tomahawk Block IV cruise missiles ; Spearfish heavyweight torpedoes;

The Astute class is the latest class of nuclear-powered fleet submarines (SSNs) in service with the Royal Navy. The boats are being constructed by BAE Systems Submarines at Barrow-in-Furness. Seven boats will be constructed: the first of class, Astute, was launched by Camilla, Duchess of Cornwall, in 2007, commissioned in 2010, and declared fully operational in May 2014. The Astute class is the replacement for the Trafalgar-class fleet submarines in Royal Navy service.

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