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Unrestricted submarine warfare. 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 regards to both the First World War ...
Sussex pledge. The Sussex Pledge was a promise made by Germany to the United States in 1916, during World War I before the latter entered World War I. After the Arabic incident, the Germans had promised that attacks on passenger ships would cease. Despite that avowed restriction, a French cross-channel passenger ferry, the Sussex, was torpedoed ...
Submarine warfare consists primarily of diesel and nuclear submarines using torpedoes, missiles or nuclear weapons, as well as advanced sensing equipment, to attack other submarines, ships, or land targets. Submarines may also be used for reconnaissance and landing of special forces as well as deterrence. In some navies they may be used for ...
Shaded areas of the map depict the submarine warfare zone declared by Germany in February 1917. In 1917 Germany decided to resume full unrestricted submarine warfare. It was expected to bring America into the war, but the Germans gambled that they could defeat Britain by this means before the US could mobilize.
United States Submarine Operations in World War II by Theodore Roscoe is a classic history of the role of the United States Navy submarines in World War II, earning him the title of "grandfather" of World War II American Submarine historiography. [1] Because the book was written shortly after the war, later scholars have found errors or ...
On February 1, Germany announced resumption of "unrestricted" submarine warfare, an act that led the United States to break off diplomatic relations with Germany on February 3. [22] The telegram, completely decrypted and translated. Hall passed the telegram to the British Foreign Office on February 5 but still warned against releasing it.
The RMS Lusitania was a British-registered ocean liner that was torpedoed by an Imperial German Navy U-boat during the First World War on 7 May 1915, about 11 nautical miles (20 kilometres) off the Old Head of Kinsale, Ireland. The attack took place in the declared maritime war-zone around the UK, three months after unrestricted submarine ...
Submarines in the United States Navy. There are three major types of submarines in the United States Navy: ballistic missile submarines, attack submarines, and cruise missile submarines. All submarines currently in the U.S. Navy are nuclear-powered. Ballistic missile submarines have a single strategic mission of carrying nuclear submarine ...