Two or more.
a group of German uboats that hunted Allied and US ships
um i dont know. search it on wikipedia or something. teehehe.
They rendezvoused together after communicating via radio.
because some allied ships were carrying contraband
the Germans used uboats and kept torpedoing cargo ships so the inhabitants didn't get the supplies they needed
because some allied ships were carrying contraband
Primarily the German U-Boats targeted Allied ships carrying fuel, cargo & troops, i.e. oilers, freighters & transports. They would also attack warships such as destroyers, cruisers, aircraft carriers, and battleships.
The Germans then threatened to use only Uboats for war and blew up a few ships.
The German navy attack on two allied ships near Bermuda in the Atlantic Ocean during World War l.
We entered World War 1 because of a German submarine attack on U.S. merchant ships in 1917.
In civilian ships alone, the figure was in the thousands. <><><> During WW II, German U-Boats sank 175 Allied warships; 2,825 merchant ships
Uboats were made to attack and sink merchant ships carrying supplies to Great Britain. Germany knew if they managed to cut Britain's supplies off then they would be unable to continue the war. They did this by launching torpedos which blew holes in enemy ships under the waterline, causing them to take on water and sink. As the war progressed, more and more were built to combat military ships as well as merchant vessels. Hope this helps.