Any mistake at sea can be deadly, but on a sub the stakes are even higher. Here are five of the worst military submarine ...

Countries like Australia, Brazil, China, Iran, Japan, Russia, the UK, and the U.S. are heavily investing in submarines ...

It's been that way since the submarine force fully modernized with nuclear power with the decommissioning of its last diesel-powered submarine, the USS Dolphin (AGSS-555), on Jan. 15, 2007.

James earned the warfare device, or “dolphins”, while embarked aboard the Virginia-class fast-attack submarine USS Vermont ...

Project 75 India (P-75I) was first envisioned in 1998 as part of a 30-year submarine-building plan, set to conclude in 2030.

While conventional diesel-electric submarines can operate underwater for no more than 48 hours, those with AIP can remain ...

The ambitious project has been delayed for at least a year due to concerns raised during sea trials regarding procedural ...

The delay is not just a setback to India’s military upgrade but a test of PM Narendra Modi’s defence acquisition policy, ...

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Russia’s ITAR-Tass news agency reported that two diesel-powered submarines from the Russian Pacific Fleet successfully launched Kalibr cruise missiles at a naval target during the exercises ...