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Submarines1997–present
Nuclear attack submarine
Seawolf-class submarine is a nuclear attack submarine. It was built by General Dynamics Electric Boat.
United StatesGeneral Dynamics Electric Boat
United States Navy
Los Angeles class
Virginia class
$3 billion per unit (equivalent to $6 billion in 2023)
1989–2005
1997–present
29
3
26
3
Nuclear attack submarine
Surfaced: 8,600 tons Submerged: 9,138 tons, (12,139 tons full, USS Jimmy Carter )
353 ft (108 m) 452.8 ft (138.0 m) USS Jimmy Carter
40 ft (12 m)
1 S6W PWR 220 MW (300,000 hp), HEU 93.5% 1 secondary propulsion submerged motor 2 steam turbines 57,000 shp (43 MW) 1 shaft 1 pump-jet propeller
20 knots (23 mph; 37 km/h) (silent) 35 knots (40 mph; 65 km/h) (maximum)
Unlimited
Only limited by food supplies
1,600 ft (490 m)
140
14 officers; 126 enlisted
8 × 26.5-inch torpedo tubes, sleeved for 21-inch weapons (up to 50 Tomahawk land attack missile / Harpoon anti-ship missile / Mk 48 guided torpedo carried in torpedo room)
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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 |
|---|---|---|---|
| 28 Sept 2026 | 108 m | Wikipedia contributors | superseded |
| 28 Sept 2026 | 108 m | Wikipedia contributors | approved |
| 28 Sept 2026 | 108 m | Wikipedia contributors | superseded |
Seawolf-class submarine equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
Italy United StatesUS Navy exact named equipment holdings: Seawolf (one more in long-term repair). Active, operational-reserve and training units excluding equipment in store; November 2025 IISS assessment. Named service only; no parent-force or national total inferred. Source role: SUBMARINES / SSN. Original estimates, ranges, reporting names, reserve, lease and employment scopes retained; nested included counts are not added. Missile-system quantities mean launchers, not rounds. No readiness, crew, carried weapon, payload, factory-production or future order count inherited.