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13-477: Ha-201 may refer to: Ha-201 -class submarine , a class of Imperial Japanese Navy submarines constructed in 1945 Japanese submarine  Ha-201 , an Imperial Japanese Navy submarine commissioned in 1945 and scuttled in 1946 Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Ha-201 . If an internal link led you here, you may wish to change

26-438: 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

39-504: 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

52-456: A specific type of torpedo, while submarine torpedo tubes are general-purpose launchers, and are often also capable of deploying mines and cruise missiles . Most modern launchers are standardized on a 12.75-inch (324 mm) diameter for light torpedoes (deck mounted aboard ship) or a 21-inch (533 mm) diameter for heavy torpedoes (underwater tubes), although torpedoes of other classes and diameters have been used. A submarine torpedo tube

65-536: A torpedo loading system, but safety is paramount. There are various manual and hydraulic handling systems for loading torpedoes into the tubes. Prior to the Ohio class , US SSBNs utilized manual block and tackle which took about 15 minutes to load a tube. SSNs prior to the Seawolf class used a hydraulic system that was much faster and safer in conditions where the ship needed to maneuver. The German Type 212 submarine uses

78-422: Is a more complex mechanism than a torpedo tube on a surface ship, because the tube has to accomplish the function of moving the torpedo from the normal atmospheric pressure within the submarine into the sea at the ambient pressure of the water around the submarine. Thus a submarine torpedo tube operates on the principle of an airlock . The diagram illustrates the operation of a submarine torpedo tube. The diagram

91-409: Is somewhat simplified but does show the working of a submarine torpedo launch. A torpedo tube has a considerable number of interlocks for safety reasons. For example, an interlock prevents the breech door and muzzle door from opening at the same time. The submarine torpedo launch sequence is, in simplified form: Spare torpedoes are stored behind the tube in racks. Speed is a desirable feature of

104-531: 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. None of the submarines made operational patrols. Except for one submarine that

117-459: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Ha-201&oldid=1045471611 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Ha-201-class submarine The Ha-201 -class submarine ( 波二百一型潜水艦 , Ha-ni-hyaku-ichi-gata sensuikan ) were

130-472: 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

143-570: 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 . The Japanese planned to build 79 Ha-201 -class submarines (Submarines No. 4911 through 4989) under

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156-661: Was shortened to Suichū Kō soku Sen suikan Ko -gata ( 水中 高 速 潜 水艦 小 型 , Underwater High speed Submarine Small type ) . 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

169-601: 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. Comparable submarines Torpedo tube There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers ) installed aboard surface vessels. Deck-mounted torpedo launchers are usually designed for

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