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 sign
Editorial cartoon by T. E. Powers from February 1915, the cartoon portrays a stylized RMS Lusitania as a perpetrator of flying the flag of the United States (despite the steamer being British) and not her true colors, which is a violation of the Hague Convention and maritime law. The Lusitania later became a victim of unrestricted submarine warfare three months after the cartoon was published when German submarine SM U-20 sank her. The incident sparked international outrage because of the killing of many civilians, and it would become one of the most harrowing examples of the horrors of unrestricted submarine warfare in history.
German art of the sinking of the Linda Blanche on 30 January 1915 by SM U-21. Passengers and crew are being allowed to disembark into lifeboats, as per cruiser rules.
American cartoon by Oscar Cesare showing the sinking of the Lusitania. Sinkings of passenger vessels without warning incensed neutral opinion.
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U-boats are naval submarines operated by Germany, especially during World War I and World War II. The term is an anglicized form of the German word U-Boot, a shortening of Unterseeboot. Austro-Hungari
Unrestricted submarine warfare
…War I, waged intermittently by Germany between 1915 and 1918 against Britain and her allies. One of the most infamous acts was on May 7, 1915, when U-boat U-20 deliberately torpedoed the British Cunard luxury liner RMS Lusitania. Germany's resumption of unrestricted submarine warfare in February 1917…
U-995, a typical VIIC/41 U-boat on display at the Laboe Naval Memorial near Kiel, Germany
The first German submarine, the SM U-1. Her remains are on display at the Deutsches Museum in Munich.
The German submarine U-11, showing the kerosene vapour trail.
Sea mines are loaded in a UC coastal submarine in the harbour of Zeebrugge