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SSN 21 Seawolf  
Initial Operational Capability (IOC): 19 July 1997
Total Production: 2
Unitary Cost: USD$2.1 billion
Origin: United States of America
Corporations: General Dynamics
Parent System: SSN 21 Seawolf
Initial Operational Capability (IOC): 19 July 1997
Total Production: 3
Total Cost: USD$6.3 billion
Family Members: SSN 23 Jimmy Carter
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Description: The SSN 21 Seawolf attack submarines were designed to be the quietest, fastest and most heavily armed vessels in the world. They can operate in any scenario against any threat, with mission and growth capabilities that far exceed Los Angeles-class submarines. They are enabled to successfully operate from underneath the Artic icepack to littoral environment. They perform attack, surveillance, intelligence, special warfare, cruise missile strike, mine warfare, anti-submarine (ASW) and anti-surface warfare (ASuW).

The SSN 21 Seawolf-class was planned for the the replacement of current Los Angeles-class submarines, but the US Navy discontinued the Seawolf-class due to its high acquisition costs ($2 billion per submarine) reducing the total number of submarines to be procured to only three.

The final Seawolf-class submarine, the SSN 23 USS Jimmy Carter, is an enlarged variant being modified to accommodate advanced technology for naval special warfare, tactical surveillance and mine warfare operations. The USS Jimmy Carter will be able to deploy and recover various payloads, undersea vehicles, without having to use torpedo tubes.

SSN 21 Seawolf Specifications

Crew: 134
Number of Weapons: 50
Torpedo Tubes: 8
Beam: 12.2 meter (40.0 foot)
Draft: 10.7 meter (35.0 foot)
Length: 108 meter (353 foot)
Max Operating Depth: 500 meter
Power: 52,000 shp (38.8 MW)
Top Speed Submerged: 18 mps (35.0 knot)
Service Life: 30 year
Displacement Submerged: 9,137 ton
Displacement Surfaced: 8,060 ton
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

SSN 21 Seawolf News

There are 4 news between
22 Oct 2004 and 21 Jun 2011
Tuesday, June 21, 2011US Navy Selects Lockheed Martin to Provide Submarine Sonar Technology Upgrade
Tuesday, August 21, 2007US Navy Recommends Raytheon Submarine Combat System for Fleet Introduction
Thursday, December 7, 2006US Navy Awards TB-34 Initial Production Contract
Friday, October 22, 2004First US Navy's 21st Century Submarine Commissioned

Operators & Related Equipment

United States of America2
Aug 20182
Oct 20132

Grand Total 21
Defensive Weapons
Mark 48 ADCAP
Offensive Weapons
RGM-84D Harpoon
Tactical Tomahawk
Tomahawk Block II
Tomahawk Block III
Protection Systems
Sensor Systems

SSN 21 Seawolf Ship Listing

SerialNameStatusLaunch DateCommissionDecommission
SSN 21 USS Seawolf-19 Jul 1997-
SSN 22 USS Connecticut-11 Dec 1998-

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