to win the war
The Germans used U-Boats to sink the merchant ships that were carrying supplies to Britain. German U-Boats were also used to target and sink naval vessels. On the day that Britain declared war on Germany, German U-boats sunk the British merchant ship the Athenia as it sailed from Liverpool to Montreal.
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.
The Germans would sink British ships carrying American citizens to America, and then they encouraged Mexico to invade America which led to the U.S. finally declaring war in 1917.
To blockade the Confederate Ports, intercepting the blockade runners and hunt down the Confederate cruisers, which were trying to capture or sink the Union merchant ships, throughout the seas.
3,000 Allied ships (175 warships; 2,825 merchant ships)
The Germans only managed to sink about 5 Allied ships out of almost 11,000
The Nazi Germans sent out UBoats (submarines) and other ships to sink merchant ships and even cruise ships to prevent the cargo from reaching the United Kingdom.
Roughly 2,000 merchant ships in WWII.
Yes, and so the Germans couldn't use it against the rest of the world neither.
Primarily over 2,000 merchant vessels, with a sprinkling of allied warships.
The Sussex Pledge (:
Hundreds in the first few weeks.
The loss was of allied and neutral ships in 1917