SM UB-77 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 2 October 1917 as SM UB-77.
UB-77 was surrendered on 16 January 1919 in accordance with the requirements of the Armistice with Germany and broken up in Swansea in 1921.
Construction
UB-77 was ordered by the GIN on 23 September 1916.
She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 5 May 1917. UB-77 was commissioned later that same year under the command of Kptlt. Wilhelm Meyer. Like all Type UB III submarines, UB-77 carried 10 torpedoes and was armed with a deck gun. UB-77 would carry a crew of up to 3 officer and 31 men and had a cruising range of . UB-77 had a displacement of while surfaced and when submerged. Her engines enabled her to travel at when surfaced and when submerged.
Summary of raiding history DateNameNationalityTonnageTonnages are in gross register tonsFate5 February 191814,348Sunk31 March 191820,904Damaged28 August 1918Lompoc7,270Damaged
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