Columbia Class
Type: Nuclear Ballistic Missile Submarine (SSBN)
Domain: sea
Country of Origin: United States
Manufacturer: General Dynamics (Electric Boat)
Overview
Next-generation nuclear ballistic missile submarine replacing the Ohio class as the sea-based leg of the US nuclear triad. Carries 16 Trident II D5 SLBMs. Features electric-drive propulsion, life-of-ship nuclear reactor requiring no refueling, and advanced stealth. Most expensive weapons program in US Navy history at $130+ billion.
Technical Specifications
| crew | ~155 |
|---|---|
| reactor | S1B life-of-ship reactor (no mid-life refueling) |
| armament | 16× Trident II D5LE SLBM |
| unit_cost | ~$15B (lead ship) |
| propulsion | Electric drive for reduced acoustic signature |
| displacement | 20,800 tonnes (submerged) |
| expected_ioc | 2031 |
Operators
- United States
Related sea Weapon Systems
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