SM UB-40 [SEP] vessel class
SM UB-40
SM "UB-40" was a German Type UB II submarine or U-boat in the German Imperial Navy () during World War I.
Design.
A German Type UB II submarine, "UB-40" had a displacement of when at the surface and while submerged. She had a total length of , a beam of , and a draught of . The submarine was powered by two Körting six-cylinder diesel engines producing a total , two Siemens-Schuckert electric motors producing , and one propeller shaft.
SM UB-123
SM "UB-123" was a German Type UB III submarine or U-boat in the German Imperial Navy () during World War I. She was commissioned into the German Imperial Navy on 6 April 1918 as SM "UB-123".
She torpedoed and sunk a vessel operated by the City of Dublin Steam Packet Company on 10 October 1918, shortly after the new German Government had asked President Wilson to negotiate an armistice. "Leinster" went down just outside Dublin Bay. Over 500 people perished in the sinking