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I-400 Class Submarine
3,530 Tons (surfaced)
5,223 Tons (submerged)
8 x torpedo tubes
5.5" deck gun
bridge 25mm AA gun
3 x 3x25mm AA gun
Hanger converted to transport fuel
USN October 16, 1945
Built by Sasebo Naval Yard at Sasebo. Laid down October 2, 1943 as Sentoku Type I-400 Class Submarine but during construction the water tight hanger was converted to transport aviation fuel due to the desperate need to transport aviation fuel from the Netherlands East Indies (NEI) to Japan. Launched September 5, 1944. Assigned to Commander Otoji Nakamura as chief equipping officer. Completed July 24, 1945 in the Imperial Japanese Navy (IJN) as I-402 attached to the Sixth Fleet, SubDiv 1 with I-13, I-14, I-400 and I-401. Assigned to Commanding Officer (CO). Commander Otoji Nakamura.
On August 11, 1945 while moored in Kure Harbor around 10:40am targeted by P-51D Mustangs that dropped bombs that scored several near misses that resulted in several holes in the fuel tanks and wound two of the crew. On September 2, 1945 after the official surrender of Japan I-402 was surrendered at Kure and decommissioned.
During October 1945 a crew of U. S. Navy (USN) sailors take the submarine from Kure to Sasebo.
On April 1, 1946 during "Operation Road's End" I-402 and HA-201 are towed to the Goto Islands and used for target practice by USS Everett F. Larson DD-830 and other warships. Afterwards, scuttled 16 nautical miles off Kinai Island in 100 fathoms at roughly Lat 32° 37N, 129° 17E.
During August 2015, the wreckage of I-402 was located underwater by the Japanese Maritime Safety Agency.
Combined Fleet IJN Submarine I-402: Tabular Record of Movement
沈んだ潜水艦空母「伊４０２」長崎で発見か August 8, 2015
Naval History and Heritage Command (NHHC) - United States Navy at War Final Official Report to the Secretary of the Navy Covering the period of March 1, 1945, to October 1, 1945 by Fleet Admiral Ernest J. King page 55
"I-402 July 1945 decommissioned September 1945; in Japan"
Thanks to Koji Takaki for additional information
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