SM UB-115
SM UB-115 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 28 May 1918 as SM UB-115. She was the only German submarine commissioned with the number 115. UB-115 was sunk by British warships, including   and , and the rigid airship R29 at  using depth charges and aerial bombs. Construction

She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 4 November 1917. UB-115 was commissioned in the spring the next year under the command of Oblt.z.S. Reinhold Thomsen. Like all Type UB III submarines, UB-115 carried 10 torpedoes and was armed with a  deck gun. UB-115 would carry a crew of up to 3 officer and 31 men and had a cruising range of . UB-115 had a displacement of  while surfaced and  when submerged. Her engines enabled her to travel at  when surfaced and  when submerged. Fate
On 29 September 1918 while under the command of Reinhold Thomsen, UB-115 was engaged by armed trawlers (amongst others Viola), the airship R29,  and . UB-115 was depth charged until destroyed and went down at position  (WGS84), about  northeast of Beacon Point, Newton-by-the-Sea, off Northumberland. All 39 men aboard the submarine died in the attack and sinking. UB-115s wreck lies in two pieces and is covered in soft corals and an accretion formed from fly ash from a local power plant. Summary of raiding history

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German Type UB III submarines
World War I submarines of Germany
U-boats commissioned in 1918
1917 ships
Ships built in Hamburg
U-boats sunk in 1918
U-boats sunk by depth charges
U-boats sunk by British aircraft
U-boats sunk by British warships
World War I shipwrecks in the North Sea
Submarines lost with all hands
Maritime incidents in 1918