Today's military submarines often run on nuclear power, which keeps them from having to put into port every few days for fuel ...

The UK’s Vanguard-class submarines are typically only equipped for 99-day patrols, leading to speculation that the vessel had quietly resupplied part of the way through its journey. Spring is in the ...

Almost five years after a catastrophic underwater collision, the U.S. Navy is getting ready to bring one of its most capable attack submarines back to active duty. The USS Connecticut was first taken ...

The difficulty in keeping Britain's hunter-killer submarines available for operations has once more left the Royal Navy ...