• Source: Japanese submarine Ha-201

Ha-201 was an Imperial Japanese Navy Ha-201-class submarine. Completed and commissioned in May 1945, she served during the final months of World War II. She surrendered at the end of the war in September 1945 and was scuttled in April 1946.




Design and description


At the end of 1944, the Imperial Japanese Navy decided it needed large numbers of high-speed coastal submarines to defend the Japanese Home Islands against an anticipated Allied invasion (named Operation Downfall by the Allies). To meet this requirement, the Ha-201-class submarines were designed as small, fast submarines incorporating many of the same advanced ideas implemented in the German Type XXI and Type XXIII submarines. They were capable of submerged speeds of almost 14 knots (26 km/h; 16 mph).
The Ha-201 class displaced 325 metric tons (320 long tons) surfaced and 447 metric tons (440 long tons) submerged. The submarines were 53 meters (173 ft 11 in) long, had a beam of 4.00 meters (13 ft 1 in) and a draft of 3.44 meters (11 ft 3 in). For surface running, the submarines were powered by a single 400-brake-horsepower (298 kW) diesel engine that drove one propeller shaft. When submerged the propeller was driven by a 1,250-shaft-horsepower (932 kW) electric motor. They could reach 11.8 knots (21.9 km/h; 13.6 mph) on the surface and 13.9 knots (25.7 km/h; 16.0 mph) submerged. On the surface, the Ha-201-class submarines had a range of 3,000 nautical miles (5,600 km; 3,500 mi) at 10 knots (19 km/h; 12 mph); submerged, they had a range of 105 nmi (194 km; 121 mi) at 2 knots (3.7 km/h; 2.3 mph). Their armament consisted of two 533-millimeter (21 in) torpedo tubes with four torpedoes and a single mount for a 7.7-millimeter machine gun.




Construction and commissioning


Ha-201 was laid down on 1 March 1945 by the Sasebo Naval Arsenal at Sasebo, Japan, as Submarine No. 4911, the lead unit of the Ha-201-class. She was renamed Ha-201 on 5 April 1945 and was attached provisionally to the Sasebo Naval District that day. Launched on 23 April 1945, she was completed and commissioned on 31 May 1945.




Service history


Upon commissioning, Ha-201 was attached formally to the Sasebo Naval District and assigned to Submarine Division 33 in the Kure Submarine Flotilla for workups. While conducting workups in the Seto Inland Sea, she was reassigned to Submarine Division 52 on 20 July 1945.
Ha-201 had not yet conducted an operational patrol when hostilities between Japan and the Allies ended on 15 August 1945. She surrendered to the Allies at Sasebo on 2 September 1945. On 2 November 1945, she was reassigned to Japanese Submarine Division Three under United States Navy command along with her sister ships Ha-202, Ha-203, Ha-205, and Ha-210.




Disposal


The Japanese struck Ha-201 from the Navy list on 30 November 1945. She was among a number of Japanese submarines the U.S. Navy scuttled off the Goto Islands in Operation Road's End on 1 April 1946. After all the other submarines had been sunk that day, Ha-201 and the large submarine I-402, lashed together for scuttling, were sunk as gunnery targets by the destroyers USS Everett F. Larson (DD-830) and USS Goodrich (DD-831). The submarines sank together at 16:24 just beyond the 100-fathom (600 ft; 183 m) line 16 nautical miles (30 km; 18 mi) due east of Kinai Island at 32°37′N 129°17′E.




Notes






References


Hackett, Bob; Kingsepp, Sander (2019). "IJN Submarine HA-201: Tabular Record of Movement". SENSUIKAN! Stories and Battle Histories of the IJN's Submarines. Combinedfleet.com. Retrieved 9 October 2020.
Hackett, Bob; Sander Kingsepp (2015). "Sen Taka Sho Type". Sensuikan!. Combinedfleet.com. Retrieved 9 October 2020.
"Rekishi Gunzō"., History of Pacific War Vol.17 I-Gō Submarines, Gakken (Japan), January 1998, ISBN 4-05-601767-0
Rekishi Gunzō, History of Pacific War Extra, "Perfect guide, The submarines of the Imperial Japanese Forces", Gakken (Japan), March 2005, ISBN 4-05-603890-2
The Maru Special, Japanese Naval Vessels No.43 Japanese Submarines III, Ushio Shobō (Japan), September 1980, Book code 68343-43
The Maru Special, Japanese Naval Vessels No.132 Japanese Submarines I "Revised edition", Ushio Shobō (Japan), February 1988, Book code 68344-36
Ships of the World special issue Vol.37, History of Japanese Submarines, "Kaijinsha"., (Japan), August 1993

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