SM UB-25 [SEP] vessel class
SM UB-25
SM "UB-25" was a German Type UB II submarine or U-boat in the German Imperial Navy () during World War I. The U-boat was ordered on 30 April 1915 and launched on 9 October 1915. She was commissioned into the German Imperial Navy on 11 December 1915 as SM "UB-25". The submarine was lost in a collision with in Kiel harbour on 17 March 1917. She was raised on 22 March 1917 by the salvage ship and served on as a training boat until she
was also the vessel that carried one of the anchors for RMS "Titanic" to Belfast.
She was requisitioned by the Admiralty in 1914 for use by the Royal Navy during the First World War as an armed boarding steamer, serving as HMS "Duke of Albany". She was torpedoed and sunk on 25 August 1916 by the Imperial German Navy submarine SM "UB-27" in the North Sea approximately 20 miles east of the Pentland Skerries.
Her ship's bell was salvaged in 2008.
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