ha 201 class submarine

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      The Ha-201-class submarine (波二百一型潜水艦, Ha-ni-hyaku-ichi-gata sensuikan) were a class of small submarines designed for the Imperial Japanese Navy (IJN). They were first deployed in 1945, but never saw combat. The Ha-201's were designed from the outset to have high underwater speed and were based on the earlier Submarine No.71 prototype. The official designation of the submarine was Sentaka-Shō type submarine (潜高小型潜水艦, Sen-Taka-Ko-gata sensuikan, "Submarine High speed-Small type"). The type name was shortened to Suichū Kōsoku Sensuikan Ko-gata (水中高速潜水艦小型, Underwater High speed Submarine Small type).


      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


      The Japanese planned to build 79 Ha-201-class submarines (Submarines No. 4911 through 4989) under the Maru Sen Programme, prefabricating large sections of the boats, then completing them on the slipway. This was an ambitious goal considering the U.S. bombing campaign, which disrupted Japanese production, and by the time hostilities ceased on 15 August 1945 the Japanese had laid down only 22 submarines and completed only ten.


      Service


      None of the submarines made operational patrols. Except for one submarine that was wrecked, the Allies after the war scuttled all the submarines that had been completed as well as all the incomplete ones that had been launched. Those which remained on the building ways at the end of the war were scrapped incomplete.


      Boats




      Footnotes




      See also


      Comparable submarines

      German Type XXIII submarine
      I-201 class submarine
      Vessel Number 71
      Kairyū-class submarine


      Bibliography


      "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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    Ha-201-class submarine - Wikipedia

    The Ha-201-class submarine (波二百一型潜水艦, Ha-ni-hyaku-ichi-gata sensuikan) were a class of small submarines designed for the Imperial Japanese Navy (IJN). They were first deployed in 1945, but never saw combat.

    Japanese submarine Ha-201 - Wikipedia

    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.

    Imperial Submarines - combinedfleet.com

    HA-201 is tied to the mammoth Sen-Toku I-402 aviation gasoline tanker submarine and used for target practice by USS EVERETT F. LARSON (DD-830) and GOODRICH (DD-831) after the rest of the former IJN boats are scuttled. At 1624 the two submarines go down 16 miles off Kinai Island on bearing 090 just beyond the 100-fathom line at 32-37N, 129-17E.

    Ha-201-class submarine - Wikiwand

    The Ha-201-class submarine were a class of small submarines designed for the Imperial Japanese Navy (IJN). They were first deployed in 1945, but never saw combat. The Ha-201's were designed from the outset to have high underwater speed and were based on the earlier Submarine No.71 prototype.

    H I Sutton - Covert Shores

    The Type-A Ko-Hyoteki midget submarine was (and possibly still is!) the fastest electric-only submarine capable of nearly 20kt submerged. At just 20m long that was not large enough for sustained patrols and could only carry two torpedoes.

    Ha-201-class submarine | Military Wiki | Fandom

    The Ha-201 class submarine (波二百一型潜水艦, Ha-201-gata Sensuikan?) were a class of small submarines designed for the Imperial Japanese Navy (IJN). They were first deployed in 1945, but never saw combat.

    Ha-201-class Submarine | World War II Database - ww2db.com

    This article refers to the entire Ha-201-class; it is not about an individual vessel. This article has been removed for review and updates, please check back again soon! Photographs

    IJN Ha-201 (Type STS) Fast Coastal Attack Submarine - Military …

    Jun 30, 2017 · Page details technical specifications, development, operational history of the IJN Ha-201 (Type STS) Fast Coastal Attack Submarine including pictures.

    Japanese submarine Ha-210 - Wikipedia

    Ha-210 was an Imperial Japanese Navy Ha-201-class submarine. Completed and commissioned in August 1945 fours days before hostilities ended in World War II, she surrendered in September 1945 and was scuttled in April 1946.

    Warships of Japan: Imperial Japanese Navy Submarines of the …

    Two Ha-201-class submarines on the starboard side of the Japanese aircraft carrier Junyō at Sasebo, Japan, 26 September 1945.