Germany did not have a strong enough navy to challenge other navies for control of the sea; and thus had to revert to "Commerce Raiding" (Guerre de Course) the sinking of merchant vessels.
The German U-boat campaign was "Commerce Raiding."
It was the German way of saying "submarine" which properly should be called a "submersible." It is a shortening of "unterseeboot" to just uboat.
UBoat
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How many knots u have in ur grassy butt
The Allies sunk German Uboats. Uboat, not you-boat. Uboats stand for Unterseeboot - undersea boat.
German campaign in Angola happened in 1914-10.
German campaign - Napoleonic Wars - happened in 1813.
German Uboat torpedos sinking half of the Merchant Marine fleet
uboat
The Uboat was a submarine made by the Germans
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