SM UB-2 [SEP] vessel class
SM UB-2
SM "UB-2" was a German Type UB I submarine or U-boat in the German Imperial Navy () during World War I. She sank eleven ships during her career and was broken up in Germany in 1920.
"UB-2" was ordered in October 1914 and was laid down at the Germaniawerft shipyard in Kiel in November. "UB-2" was a little more than in length and displaced between , depending on whether surfaced or submerged. She carried two torpedoes for her two bow torpedo tubes and was
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