The new propulsion system is still nuclear ... is already discussing the possibility of converting some future Columbia-class submarines into guided-missile subs (SSGNs). The Ohio class was ...

Summary and 4 Points You Need to Know: The U.S. Navy’s Columbia-class submarines, designed to replace the aging Ohio-class vessels and maintain America’s sea-based nuclear deterrent ...

The submarine’s propulsion system converts nuclear energy directly into electrical power, making the Columbia-class boats the quietest and stealthiest ever built. The USS District of Columbia ...

The Columbia class submarines will be the largest ever built by the United States and rely on a “first-of-its-kind” electric drive propulsion system. Deliveries under the contract are expected through ...

Parts from both US and Australian manufacturers will be used to build two critical submarine classes. The Virginia-class and Columbia-class submarine programmes have signed long-lead contracts with ...

The Columbia class submarines will be the largest ever built by the United States and rely on a “first-of-its-kind” electric drive propulsion system. Deliveries under the contract are expected ...

The Columbia class submarines will be the largest ever built by the United States and rely on a “first-of-its-kind” electric drive propulsion system. Deliveries under the contract are expected ...

U.S. Secretary of the Navy Carlos Del Toro announced Monday the third Columbia-class ballistic-missile submarine will be named for Groton, home of the Naval Submarine Base and Electric Boat ...

The submarine’s propulsion system converts nuclear energy directly into electrical power, making the Columbia-class boats the quietest and stealthiest ever built. The USS District of Columbia ...