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U-3Is the third German U-Boat created by the German Empire in their history, and is the first of two
submarines in its class.The boat was built by
Kaserliche Werft in Danzig and was
launched on March 27, 1909.U-3 began its career in World War I as a training boat from August 1,
1914 to November 11, 1918.On December 1, 1918,
the surrendered boat was being towed to Preston to be broken
up when it sank.Unlike the first two U-boat designs, the third design consisted of a 105mm
deck gun.