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The U-boat campaign from 1914 to 1918 was the World War I naval campaign fought by German U-boats against the trade routes of the Allies, largely in the seas around the British Isles and in the Mediterranean, as part of a mutual blockade between the German Empire and the United Kingdom.
The Atlantic U-boat campaign of World War I (sometimes called the "First Battle of the Atlantic", in reference to the World War II campaign of that name) was the prolonged naval conflict between German submarines and the Allied navies in Atlantic waters –the North Sea, the seas around the British Isles, and the coast of France.
U-995, a typical VIIC/41 U-boat on display at the Laboe Naval Memorial. U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars.The term is an anglicized version of the German word U-Boot ⓘ, a shortening of Unterseeboot (under-sea boat), though the German term refers to any submarine.
The U-boat threat in the channel, although real, was not a significant worry to the Admiralty because they regarded submarines as useless. [6] Even the German high command regarded the U-boats as "experimental vessels". [7] Although the channel was a major artery of the BEF, it was never attacked directly by the High Seas Fleet.
German U-boat U-14 (early 1910s) Unrestricted submarine warfare is a type of naval warfare in which submarines sink merchant ships such as freighters and tankers without warning. The use of unrestricted submarine warfare has had significant impacts on international relations in regard to both the First World War and the Second World War. Its ...
The initial phase of the U-boat campaign in the Mediterranean comprised the actions by the KuK's U-boat force against the French. At the start of hostilities, the KuK had seven U-boats in commission; five operational, and two training; all were of the coastal type, with limited range and endurance, suitable for operation in the Adriatic.
U-151 was originally one of seven Deutschland class U-boats designed to carry cargo between the United States and Germany in 1916. Five of the submarine freighters were converted into long-range cruiser U-boats (U-kreuzers) equipped with two 15 cm (5.9 in) SK L/45 deck guns, including U-151 which was originally to have been named Oldenburg.
Type 81 U-boats carried 12 torpedoes and had various arrangements of deck guns. U 81 to U 83 had one 10.5-centimetre (4.1 in) deck gun with 140-240 rounds. U 84 - U 86 were constructed with two 8.8-centimetre (3.5 in) deck guns. In 1917, U 84 - U 86 were converted to a carry one 10.5 cm and one 8.8 cm deck gun [2] and carried 240 rounds.