U-20 (submarine)

A U-20 submarine is a type of underwater naval vessel designed for stealth and extended underwater operations. It is capable of traveling and performing missions beneath the ocean surface for long periods without surfacing, using advanced sonar, navigation, and weapon systems. These submarines are typically used by navies for intelligence gathering, surveillance, and strategic defense. They are built with pressure-resistant hulls to endure ocean depths, and their design emphasizes quietness to avoid detection. Overall, a U-20 submarine is a sophisticated underwater platform integral to modern naval capabilities.