Kyokusei Maru was a transport of the Imperial Japanese Navy, typed as an AP. She sailed as one of the transports in the convoy that met the Battle of the Bismarck Sea.
The battle is dated 2 March 1943, and in that action she was sunk. Her place in it was the convoy, a transport among the ships the battle caught.
Allied aircraft sank her. The fate of the hull falls on 2–3 March 1943, inside the Battle of the Bismarck Sea, and from that fighting she is sunk.
On 3 March 1943 the loss is a bombing. Bombs from Allied aircraft sank Kyokusei Maru that day. The attacker stands unknown, and the sinking is not credited to one plane.
Those days are one end for the ship. Kyokusei Maru, a transport in the Bismarck Sea convoy, went down under Allied air attack in the Battle of the Bismarck Sea. The battle dates her sinking to 2 March 1943, the bomb strike dates it to 3 March 1943, and the fate holds both, 2–3 March 1943, with the credit left to Allied aircraft and to no single plane.