Two American fast-attack submarines, armed with cruise missiles and torpedoes, visited Guam earlier this month.

While the United States' subs are entirely nuclear-powered ... China may possess the third largest submarine fleet in the world, but the country is clearly on track to expand its naval capacities ...

The "Michigan" deployed "superb operational planning and risk management during the completion of three highly successful missions vital to national security." ...

Setting out on an anti-submarine sweep with the stated purpose of capturing and bringing back to the United States a German submarine, all units of the Task Group worked incessantly throughout the ...

SEOUL--The United States deployed a nuclear-powered submarine ... The USS Michigan is one of the biggest submarines in the world. The Ohio-class guided-missile submarine can be armed with 150 ...

UC-97 became probably the only German submarine sunk within the continental United States. One of five U-boats ... at 361 feet and 3,304 tons the world's largest submarine until World War II.