the word in German is Unterseeboot -- literally, boat under the sea. The informal name for the vessels are U-Boat.
U-boat
Yes, that is a German term. Non-Germans call them submarines.
U-boat means under the sea boat aka submarines , they used to call it u-boat during the world wars
U-boat means under the sea boat aka submarines , they used to call it u-boat during the world wars
Like almost any other nation's submarines; they were just subs. It just so happens that Germans call their subs U-boats (under-sea boats).
Nazis.
1.Weltkrieg
yes
Submarines were historically referred to as "submersibles" or "undersea boats." In naval terminology, they were often called "U-boats," particularly in reference to German submarines used during World War I and II. Additionally, the term "submarine" itself, derived from the Latin "sub" (under) and "marinus" (of the sea), became the standard designation for these underwater vessels.
Ships would form a convoy in an attempt to reduce their vulnerability to enemy submarines.
Many early submarines were failures. However, as many countries in the world now own and even build submarines, we could reasonably call them a success.
They did more than consider it. The US dropped almost 1.5 million tons of explosives on German war targets.