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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 ...
Open Door policy toward China. The Open Door was a principle of free trade advocated by the United States towards China from 1850-1949. It called for equal treatment of foreign nationals and firms, as outlined in the Open Door notes issued in 1900 in cooperation with London.
U-boat campaign. 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. It took place largely in the seas around the British Isles and in the Mediterranean. The German Empire relied on imports for food and domestic food production (especially fertilizer) and the ...
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-launched ballistic missiles.
08000947. Added to NRHP. 18 September 2008 [2] USS Blueback (SS-581) is a Barbel -class submarine that served in the United States Navy from 1959 to 1990, and subsequently was made into an exhibit at the Oregon Museum of Science and Industry. She was the second Navy submarine to bear the name. Blueback was laid down by Ingalls Shipbuilding ...
Henning Rudolf Adolf Karl von Holtzendorff (9 January 1853 – 7 June 1919) was a German admiral during World War I, who became famous for his December 1916 memo about unrestricted submarine warfare against the United Kingdom. He was a recipient of Order of the Black Eagle and the Pour le Mérite with oak leaves and was one of just six Grand ...
USS Sailfish (SS-192), was a US Sargo-class submarine, originally named Squalus. As Squalus , the submarine sank off the coast of New Hampshire during test dives on 23 May 1939. The sinking drowned 26 crew members, but an ensuing rescue operation, using the McCann Rescue Chamber for the first time, saved the lives of the remaining 33 aboard.
Coordinates: 50.836°N 0.239°W. ' The Admiralty M-N Scheme' (sometimes given as " Project M-N ") was a World War I British plan to close the Strait of Dover in the English Channel to German U-boats, by means of a chain of either eight or twelve massive towers linked by anti-submarine booms and nets. Only two towers had been constructed before ...