SSN-774 Virginia-class
Los Angeles | Seawolf | NSSN | |
---|---|---|---|
Length: | 360 feet (110 meters) | 353 feet (108 meters) | 377 ft. (115 m) |
Beam: | 33 feet (10 meters) | 40 ft. (12.2 m) | 34 ft. (10.4 m) |
Submerged displacement (long tons): | 6,900 | 9,100 | 7,800 |
Reactor Power: | 35,000 shp | 52,000 shp | 40,000 shp (30 MW) |
Submerged speed: | 25+knots | 25+knots | 25+knots |
Depth: | 800+ ft. (250 m) | 800+ ft. (250 m) | 800+ ft. (250 m) |
Weapons | |||
Mk 48 ADCAP torpedoes | x | x | x |
Tomahawk cruise missiles | x | x | x |
Mk60 Captor mines | x | x | x |
Advanced mobile mines | x | x | x |
Unmanned underwater vehicles | -- | -- | x |
Specifications | |||
---|---|---|---|
Contractors |
General Dynamics Electric Boat Division [lead design authority] Newport News Shipbuilding Lockheed Martin Federal Systems (Combat System) Raytheon Electronics Systems (Combat System) | ||
Power Plant | One S9G pressurized water reactor 40,000 shp (30 MW) [early units] One Transformational Technology Core (TTC) pressurized water reactor ??,000 shp [later units] one shaft with pumpjet propulsor Improved Performance Machinery Program Phase III one secondary propulsion submerged motor | ||
Block I | Block III SSN 784-791 | Block V | |
Displacement | 7,800 tons submerged | .. | 9,500 tons submerged |
Length | 377 feet | 377 feet | 461 feet |
Draft | 32 feet | 32 feet | 32 feet |
Beam | 34 feet | 34 feet | 34 feet |
Speed | 25+ knots submerged | 25+ knots submerged knots | 25+ knots submerged ? |
Depth | Greater than 800 feet | Greater than 800 feet | Greater than 800 feet |
Horizontal Tubes | Four 21" Torpedo Tubes | Four 21" Torpedo Tubes | Four 21" Torpedo Tubes |
Vertical Tubes | 12 Vertical Launch System Tubes | 2 large diameter Virginia Payload Tubes [VPT] (in lieu of VLS beginning with SSN 784) for 12 Tomahawk Cruise Missiles | 12 Tomahawk Cruise Missiles 4 additional large diameter payload tubes for an additional 28 Tomahawk Cruise Missiles (or 40 in total) |
Weapons | 38 weapons, including: Vertical Launch System Tomahawk Cruise Missiles Mk 48 ADCAP Heavyweight Torpedoes Advanced Mobile Mines Unmanned Undersea Vehicles | .. | .. |
Special Warfare |
Dry Deck Shelter Advanced SEAL Delivery System | Dry Deck Shelter Advanced SEAL Delivery System | Dry Deck Shelter Advanced SEAL Delivery System |
Sonars |
Spherical active/passive arrays Light Weight Wide Aperture Arrays TB-16, TB-29, and future towed arrays High-frequency chin and sail arrays | Large Aperture Bow (LAB) Light Weight Wide Aperture Arrays TB-16, TB-29, and future towed arrays High-frequency chin and sail arrays | Large Aperture Bow (LAB) Light Weight Wide Aperture Arrays TB-16, TB-29, and future towed arrays High-frequency chin and sail arrays |
Countermeasures | 1 internal launcher (reloadable 2-barrel) 14 external launchers | 1 internal launcher (reloadable 2-barrel) 14 external launchers | 1 internal launcher (reloadable 2-barrel) 14 external launchers |
Crew | 113 officers and men | 132: 15 officers; 117 enlisted | 132: 15 officers; 117 enlisted |
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