With red light illuminating the submarine's interior rather than a ... Moreover, the military uses red lights on submarines to help the crew's sleep patterns, making them more alert when they ...

In a nod to the inclinometer, submarine crew members were nicknamed "bubbleheads." The hydraulic manifold was nicknamed the "Christmas tree" because of its red and green lights indicating open and ...

The submarine carried out various peacetime missions ... and saw the Olympia warship docked next door. The Becuna used red lights for night operations and combat because it's easier for one's ...

North Korea unveiled for the first time a nuclear-powered submarine under construction, a weapons system that can pose a major security threat to South Korea and the US. State media on Saturday ...

In a nod to the inclinometer, submarine crew members were nicknamed "bubbleheads." The hydraulic manifold was nicknamed the "Christmas tree" because of its red and green lights indicating open and ...