was a Japanese landing craft depot ship operated by the Imperial Japanese Army (IJA). The vessel did not have a flight deck like her sister ship . Design features Nigitsu Maru was a passenger liner taken over before completion and refitted by the Imperial Japanese Army. On 9 January 1944 Nigitsu Maru left Palau for Ujina in convoy FU-901 as the sole merchant ship escorted by the destroyer . She carried about 2,000 troops, mainly soldiers of the 12th Independent Engineer Regiment. Three days later off the Okino-Daito Island, southeast of Okinawa, Nigitsu Maru was attacked by the US submarine which fired four torpedoes from the surface. Two hit Nigitsu Maru which sank in eight minutes at . 456 soldiers, 83 gunners and 35 crewmen were killed. Amagiri picked up the survivors and landed them in Japan. Notes References Ships built by IHI Corporation 1942 ships Amphibious warfare vessels Ships sunk by American submarines Maritime incidents in January 1944 World War II shipwrecks in the Pacific Ocean