HMS X1
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HM Submarine X1 was a British submarine of the interwar period. Conceived and designed as a submersible commerce raider for the Royal Navy; at the time of her launching she was the largest submarine i
Englantilainen sukellusvene X1
SM U-139
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SM U-139 was the lead ship of her class of cruiser submarines serving in the Imperial German Navy in World War I. She was commissioned on 18 May 1918 under the command of Lothar von Arnauld de la Peri
HMS X1
…British M-class submarine — an earlier attempt at a large gun-armed submarine SM U-139 - U-139 class (Projekt 46); one of three German First World War submarine cruisers Surcouf — a similar French large gun-armed submarine…
German U-boat U-139
Weather flag of SM U-139 at the National Museum of the United States Air Force.