Japanese submarine chaser Cha-156 (1944)

On 15 November 1944, she departed Moji, Kitakyūshū destined for Miri, Borneo with fellow No.1-class auxiliary submarine chaser Cha-157, Type C escort ship CD-61,[4] Type D escort ship CD-134, and minesweeper W-101, escorting convoy MI-27 consisting of four tankers (Awagawa Maru, Kyokuun Maru, Osakasan Maru, and Enkei Maru) and six transport/cargo ships (Edogawa Maru, Shoho Maru, Matsuura Maru, Seisho Maru, Koshu Maru, and Chinkai Maru).[5] Enkei Maru and Kyokuun Maru developed mechanical problems and were forced to return to Moji.[5] The convoy was running parallel to Convoy Hi-81 which had left Imari on 14 November 1944 destined for Formosa to benefit from air cover provided by HI-81's escort carrier Shin'yō which was carrying fourteen Nakajima B5N "Kate" torpedo bombers of the 931st Air Squadron, Saeki Naval Air Station.[6] The two convoys converged together at times.[6]

On 17 November 1944, in the Yellow Sea off Cheju Island, MI-27 was spotted by the US submarines Sunfish and Peto which were operating in a wolfpack with Spadefish.[5] Sunfish torpedoed and damaged both Edogawa Maru and Seisho Maru while Peto torpedoed and sank Osakasan Maru (killing 142).[5] Nearby, Spadefish spotted Shin'yō of HI-81 and fired six torpedoes four of which hit causing the carrier to burst into flames and sink (killing 1,130).[6] W-101 and CD-61 were unattached from MI-27 to pick up survivors.[6] On 18 November 1944, Sunfish torpedoed and sank the damaged Seisho Maru (killing 448) and the damaged Edogawa Maru (killing 2,083); while Peto torpedoed and sank Chinkai Maru (killing 39).[5] After losing four of the eight ships being escorted, the remainder of convoy MI-27 arrived at Sijiao Island on 19 November 1944.[5]

On 29 March 1945, she was attacked and sunk by Consolidated B-24 Liberators with the Fifth Air Force while docked in port at 22°40′N 120°15′E.[3][7] She was struck from the Navy List on 10 May 1945.[3]