picture of u boat

A U-boat is a German submarine, primarily used during World War I and World War II. Known for its stealthy underwater capabilities, it was primarily employed in naval warfare to attack enemy merchant ships, warships, and submarines. The term "U-boat" comes from the German word "Unterseeboot," meaning "undersea boat." These submarines were pivotal in the Battle of the Atlantic, where they aimed to disrupt Allied supply lines.