The German, U-boat. Hitler ended up bringing them back to use in WWII
a U-Boat is a German Submarine used to fight the U.S in WW1
Principally the Imperial German Navy and the Royal Navy - both enormous forces at the time. Submarines and anti-submarine warfare were still in their infancy in WW1, but it was a German submarine that torpedoed the liner Lusitania off the coast of Ireland.
German is. Submarine is not. "A German submarine surfaced in the North Sea."
U-boats are yellow. Like the song "Yellow submarine" by The Beatles. The name for them during ww1 and ww1 was Yellow submarine to confuse the enemy. The name now is U-boat. The weighed about 789 tons and were as long as a canoe. ^ 95% wrong!
"Unrestricted Submarine Warfare" was the policy followed by the German Navy to have German submarines without warning sink ships that were transporting food and other resources. U-boat was a term in WW1 referring to a submarine.
German submarine sinks the British passenger boat Lusitiana, killing a few Americans, this led the US close to ww1
German submarine U-A was created in 1939.
Lusitania wasn't a German submarine, it was an American merchant ship that was sunk by German submarines.
A submarine was used to monitor enemy activity and then to attack by using large torpedoes.
German submarine Deutschland was created on 1917-02-19.
Unterseeboot is German for submarine.