Columbia-class submarine
The Columbia-class (formerly known as the Ohio Replacement Submarine and SSBN-X Future Follow-on Submarine) is an upcoming class of nuclear-powered ballistic missile submarines designed to replace the Ohio class of the United States Navy. Construction of the first submarine began on 1 October 2020. It is scheduled to enter service in 2031.
Artist's rendering of the planned Columbia-class submarine (Naval Sea Systems Command) | |
| Class overview | |
|---|---|
| Preceded by | Ohio class |
| Cost | |
| Built | 2020–present |
| Planned | 12 |
| On order | 2 |
| Building | 1 |
| General characteristics | |
| Type | Ballistic missile submarine (SSBN) |
| Displacement | 20,810 long tons (21,140 t) (submerged) |
| Length | 560 ft (171 m) |
| Beam | 43 ft (13 m) |
| Installed power | S1B |
| Propulsion | Turbo-electric drive, pump-jet |
| Range | Unlimited |
| Complement | 155 (accommodation) |
| Sensors and processing systems | Enlarged version of the Virginia-class LAB sonar |
| Armament | 16 × Trident D5 and torpedo tubes |
On 3 June 2022, the Navy announced that this first boat will be named USS District of Columbia (SSBN-826), because there currently exists an attack submarine named USS Columbia (SSN-771). In the announcement, the Navy continued to refer to the class as the Columbia class.
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