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HHI delivers stern section of new Columbia class ballistic missile submarine.

| Naval News Navy 2024

According to information published by Huntington Ingalls Industries on January 10, 2024, the company has recently completed and delivered the stern section of a new Columbia-class ballistic missile submarine.
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Russian Vyborg Shipyard laid the Purga ice class coastguard ship of project 23550 925 001 Stern section of the Columbia class submarine District of Columbia. (Picture source: HHI)

This section, destined for the first submarine in its class, named "District of Columbia" (SSBN 826), was transported by barge to a facility in Rhode Island.

This development is part of a broader initiative where the Columbia-class submarines will eventually replace the current fleet of Ohio-class ballistic missile submarines.

Columbia class submarines

These submarines measure approximately 560 feet in length and displace about 20,800 tons when submerged. In their design, a significant emphasis has been placed on stealth and endurance. They are equipped with a new life-of-the-boat nuclear reactor that allows them to operate for over 40 years without refueling.

This, combined with state-of-the-art quieting systems, significantly reduces their acoustic signature. The hull construction involves a new type of steel, enhancing depth capability and survivability.

The primary mission of the Columbia class is strategic deterrence, supported by a secondary capability for conventional strike and special operations support.

Each submarine carries 16 missile tubes designed for the Trident II D5 missiles, providing formidable strike capabilities. The class is also equipped with upgraded sonar systems, periscopes, and communication suites, which enhance situational awareness and operational effectiveness.

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