Latest News About Unrestricted Submarine Warfare

Updated 2026-04-20 20:05

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Diary of the War: February 1917

The Resumption of Unrestricted Submarine Warfare On January 31, 1917, the resumption of unrestricted submarine warfare by Germany was announced to the Reichstag, to come into effect the following …

thewreckoftheweek.com

Unrestricted Submarine Warfare - History Learning Site

The use of unrestricted submarine warfare was announced by Germany on January 9th, 1917. The use of unrestricted submarine warfare was to have a major impact on World War One as it was one of the main reasons why America joined the war. When the German Chancellor Bethmann Hollweg announced Germany’s intention to use unrestricted …

www.historylearningsite.co.uk

Unrestricted submarine warfare

Unrestricted submarine warfare is a type of naval warfare in which submarines sink merchant ships such as freighters and tankers without warning, as opposed to attacks per prize rules (also known as "cruiser rules") that call for warships to search merchantmen and place crews in "a place of safety" (for which lifeboats do not qualify, except under particular circumstances) before sinking them, unless the ship shows "persistent refusal to stop ... or active resistance to visit or search". To...

wikipedia.nucleos.com