Military submarines use red light instead of fluorescent or other light types for specific, scientific reasons. Here's ...

For the USS Cod, you'd level off at the submarine's periscope depth, which is 67 feet. You'd then use your search periscope to scan the horizon. The search periscope's wide field of view allows ...

A photo depicting an American nuclear-powered submarine poking its periscope above the waves—within shooting distance... Here’s What You Need to Remember: Virginia-class submarines are ...