Enoura Maru was a Japanese cargo ship used by the Imperial Japanese Navy during World War II as a troop transport and prisoner of war (POW) transport ship. Japanese POW transport ships are referred to as hell ships, due to the overcrowded and unsanitary conditions and the many deaths that occurred on board. On 9 January 1945, while docked at the port of Takao in Formosa and loaded with Allied prisoners of war who had survived the earlier sinking of Ōryoku Maru, it was attacked by Allied aircraft resulting in the deaths of approximately 400 Allied POWs.