SM U-20[Note 1] was a German Type U 19 U-boat built for service in the Imperial German Navy. She was launched on 18 December 1912, and commissioned on 5 August 1913. During World War I, she took part in operations around the British Isles.

The SM U-20 was a German U-19 Type submarine built for the Kaiserliche Marine. She was commissioned on 5 August 1913. During World War I she sank 37 ships for a total of 145,830 tons and damaged 2 ships for a total of 2,643 tons.

U-20 attempted to torpedo a Soviet submarine chaser in the Black Sea off Tuapse, but the target went on the offensive, dropping eight depth charges. The boat was then kept submerged by aircraft for four hours and subsequently forced to return to base by mechanical failures.

SM U-20 (Germany), was a Type U 19 submarine launched in 1912 and that served in the First World War until grounded on 4 November 1916; notable for sinking RMS Lusitania

On 7 May, 1915 U 20 (Kptlt. Walther Schwieger) torpedoed the British liner RMS Lusitania. She sank in 18 minutes, taking 1195 lives with her, including 123 Americans. This sinking pushed the Americans slightly closer to declaring war on Germany, but …

German submarine U-20 was a Type IIB U-boat of Nazi Germany 's Kriegsmarine. Her keel was laid down on 1 August 1935, by Germaniawerft of Kiel as yard number 550. She was commissioned on 1 February 1936. During World War II, she conducted operations against enemy shipping.

The SM-U20 submarine was among the most lethal Naval weapons developed by Imperial Germany in the early 20th Century. The SM-U20 German boat has a notorious place in history for having sunk the British passenger liner RMS Lusitania, which resulted in heavy loss of innocent lives. There were 1959 passengers on board, and 1195 were killed.

SM U-20 was a German Type U 19 U-boat built for service in the Imperial German Navy. She was launched on 18 December 1912, and commissioned on 5 August 1913. During World War I, she took part in operations around the British Isles.

Built in 1913 the diesel generated U-20 submarine gained notoriety during the First World War for its sinking of the giant Lusitania cruise vessel. Forming part of the High Seas Fleet the U-20 was despatched on commerce raiding missions in 1915.

Caption: German submarine: U 20, on Danish coast, November 1916. U 20 is known for sinking RMS Lusitania on May 7, 1915. She was grounded on November 4, 1916 and destroyed by her crew the...