A GPS can't work underwater, so how do submarines navigate?

Unlike your car, a submarine cannot use GPS to reach its destination, as the technology doesn't work underwater. Here's how ...
AOL

Diesel Engines Need Oxygen, So How Do Submarines Use Them Underwater?

Inside a diesel engine's cylinder, compressed air raises the temperature to ignite injected fuel, and the resulting force drives pistons to power the vehicle's main gears. Chief to this combustion ...
Business Insider

How nuclear submarines actually work, according to a former commander

L. David Marquet is a former US Navy Captain and author who served in the submarine force for nearly three decades. Marquet graduated from the US Naval Academy at the top of his class in 1981, during ...
The National Interest

Here’s How Anti-Submarine Planes Actually Work

Submarines are hard to find. They exploit ocean depth, acoustic complexity, and thermal layers to maintain low observability and high survivability. Diesel-electric submarines are especially quiet at ...