SM U-20
Boat
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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. Wikipedia
Builder: Kaiserliche Werft Danzig
Launched: December 18, 1912
Construction started: November 7, 1911
Armament: 4 × 50 cm (19.7 in) torpedo tubes (2 each bow and stern) with 6 torpedoes; 1 × 105 mm gun
Boats & landing craft carried: 1 dinghy
Fate: Grounded 4 November 1916 and destroyed by her crew the next day
Laid down: 7 November 1911