SM UB-133 [SEP] vessel class
SM UB-133
SM "UB-133" was a German Type UB III submarine or U-boat built for the German Imperial Navy () during World War I. Completed after the end of hostilities, she was not commissioned into the German Imperial Navy but surrendered to Britain in accordance with the requirements of the Armistice with Germany. In 1922 she was broken up in Rochester.
Construction.
She was built by Friedrich Krupp Germaniawerft of Kiel and following just under a year of construction, launched at Kiel on 27 September 1918.
with a deck-mounted machine gun. "UB-13" was broken into sections and shipped by rail to Antwerp for reassembly. She was launched in March 1915 and commissioned as SM "UB-13" in April.
"UB-13" spent her entire career in the Flanders Flotilla and sank 11 merchant ships, about half of them British fishing vessels. In March 1916, "UB-13" was responsible for sinking the Dutch ocean liner , raising the ire of the Dutch public. "Tubantia" was the largest neutral vessel sunk during