<strong>Submarines</strong> lurk deep beneath the surface of the ocean ready to strike at amoments notice. Powered by nuclear engines they can sail for years wi... » 

Submarines lurk deep beneath the surface of the ocean ready to strike at amoments notice. Powered by nuclear engines they can sail for years withoutrefueling. Armed with missiles and torpedoes submarines are a navys toughestoffensive weapon. Discover more about these underwater weapons from the deadlyGerman Uboats of World War I to modern hightech hunterkiller subs. «