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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