Here's how fast some of the world's modern submarines ... up as repairs and upgrades were canceled. Nuclear submarines are powered by small nuclear reactors that power banks of batteries.

Another trait submarines need is speed. They're far from the fastest vessels in the world's oceans – five of the fastest navy ships exceed 40 knots — but speed is a necessity in order to ...

NEWS has toured the ‘most advanced warship in the world’, with Australia set to receive three over the next decade.

The UAV took a 5-pound payload consisting of circuit cards, medical supplies, and food to the Virginia-class fast-attack submarine USS ... the capability onto a small patrol boat out of Pearl ...