By the time of the Pacific War, the "Momi"-class was reaching the end of its service life, and only three ("Tsuga", "Hasu" and "Kuri") remained in service as destroyers. An effort was made to upgrade their capabilities by removing the minesweeping gear from the stern and replacing with 36 to 48 depth charges and four depth charge launchers. The amidships Type 3 guns was replaced by two triple Type 96 AA guns from 1942–1943, and a Type 13 radar was added. "Tsuga" was sunk by air attack 15 January 1945. "Hasu" was surrendered and scrapped at the end of the war. "Kuri" was surrendered, but sank after striking a mine off Korea on 8 October 1945.