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Submarines2010–present
Nuclear-powered attack submarine
Astute-class submarine is a nuclear-powered attack submarine. It was built by BAE Systems Submarines , Barrow-in-Furness. Published specifications list length 97 m and beam 11.3 m; the configuration for each measurement is shown below.
United KingdomAstute class
BAE Systems Submarines , Barrow-in-Furness
Royal Navy
Trafalgar class
SSN-AUKUS (First design contract awarded)
Over £ 1.65 billion per boat (2015 est.)
2001–present
2010–present
7
1
6
5
Nuclear-powered attack submarine
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)
97 m (318 ft 3 in)
11.3 m (37 ft 1 in)
10 m (32 ft 10 in)
1 × Rolls-Royce PWR 2 nuclear reactor MTU 600 kilowatt diesel generators
30 knots (56 km/h; 35 mph), submerged
Unlimited
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
Over 300 m (980 ft)
98 (capacity for 109)
Thales Sonar 2076 Atlas DESO 25 echosounder 2 × Thales CM010 optronic masts Raytheon Successor IFF
6 × 21 in (533 mm) torpedo tubes with stowage for up to 38 weapons: Tomahawk Block IV cruise missiles Spearfish heavyweight torpedoes
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displacement 7,400 tonnes
length 97 metres
Speed 30 knots
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
True scale
Sourced dimensions beside a 1.75 m human reference.
Points represent sourced observations, including revisions. Revisions on the same effective date are not separate inventory events. Ranges appear in the table and are not plotted as exact points.
| Observation / report period | Value | Source | Claim state |
|---|---|---|---|
| 29 Sept 2026 | 97 m | United Kingdom Armed Forces | superseded |
| 29 Sept 2026 | 97 m | United Kingdom Armed Forces | superseded |
| 29 Sept 2026 | 97 m | United Kingdom Armed Forces | superseded |
| 29 Sept 2026 | 97 m | United Kingdom Armed Forces | superseded |
| 29 Sept 2026 | 97 m | United Kingdom Armed Forces | approved |
Astute class equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
United KingdomRoyal Navy exact named equipment holdings of Astute. Active, operational-reserve and training units excluding equipment in store; November 2025 IISS assessment. Named service only, not a national or parent-force total or combat-readiness measure. Source role(s): SUBMARINES / SSN. No heading aggregate, carried armament, crew, payload, factory production or future order count inherited. The leading printed inventory count is retained; separately stated extra reserve, nonoperational or repair quantities inside parentheses are not added to it and remain verbatim in the excerpt. Source parentheses retain employment, lease, reporting designation, alternate model, or included-subset scopes exactly. Own fetched primary and alternate/model identity declarations are retained. Numbers inside an included subset are part of the printed count and are never added again; no sibling or parent specification is copied.