Completion of the ship was originally scheduled for March 1945, but it was rescheduled for August because of delays. Work continued until 16 March 1945, but it was halted when she was 80% complete to concentrate on the construction of small submarines needed to defend Japan against an American invasion. She was anchored in Ebisu Bay, near Sasebo, and surrendered there on 2 September along with the rest of the Japanese military. "Ibuki" was scrapped in Sasebo Naval Arsenal Drydock No. 7 from 22 November 1946 to 1 August 1947.