Columbia-Class is a new generation of submarines intended to quietly patrol the undersea realm around the world.
While the Columbia-Class is intended to replace the existing fleet of Ohio-Class ballistic missile submarines, the new boats include a number of not-yet-seen technologies as well as different configurations when compared with the Ohio-Class. The Columbia-Class will have 16 launch tubes rather than the 20 tubes current on Ohio boats, yet the Columbias will also be about 2-tons larger, according to Navy information.
The Navy has now issued at least one-fourth of the design work and begun further advancing work on systems such as a stealthy “electric drive” propulsion system for the emerging nuclear-armed Columbia-Class ballistic missile submarines by 2021.
“Of the required design disclosures (drawings), 26-percent have been issued, and the program is on a path to have 83-percent issued by construction start,” Bill Couch, spokesman for Naval Sea Systems Command, told Warrior Maven.
The Columbia class is to be equipped with an electric-drive propulsion train, as opposed to the mechanical-drive propulsion train used on other Navy submarines.
In today’s Ohio-class submarines, a reactor plant generates heat which creates steam, Navy officials explained. The steam then turns turbines which produce electricity and also propel the ship forward through “reduction gears” which are able to translate the high-speed energy from a turbine into the shaft RPMs needed to move a boat propeller.