 "UB-43" was decommissioned on 15 July and taken over by the Austro-Hungarian Navy.Renamed "U-43" for Austro-Hungarian service, the boat became the class leader of the "U-43" boats when she was commissioned into the Austro-Hungarian Navy on 30 July 1917.The submarine's successes while under German command were not matched under Austro-Hungarian; she damaged a single ship in November 1917 in her only successful attack.