In this type, the navigation performance was improved and the design was rationalized based on the operational results of the preceding 1954 planned boats (Kari-class, Kamome-class). The basic design was carried out by the Ship Design Association for boats in 1954, but it was transferred from this model to the Technical Research Institute of the Defense Agency (at that time), and the plan number was K103A.[1]
They were designed to be larger (1.4 times the standard displacement) based on the FY1954 plan, and the ship type was the same flush deck type. In the 1954 classes, the elaborate design with extremely thin plates led to an increase in man-hours, so the bow was 2.9 to 3.2 mm thick, but now it is 4.5 to 6 mm, and the area below the waterline is also 4.5 to 8 mm. Although it was thickened to millimeters, it still had a thin plate structure as a whole. In addition, in the 1954 classes, the bridge and the deck room were separated to reduce the area on the wind pressure side, but there were drawbacks such as the inconvenience of communication inside the ship in stormy weather and the inability to secure sufficient space inside the ship. Therefore, in this model, the front and rear superstructures are integrated so that it can be easily moved back and forth even in stormy weather.[2]
In addition to the wing on the bridge, they were equipped with the flagship equipment, so the superstructure is extended 2.5 meters to the rear to provide the headquarters general affairs room. In addition, since the 1934 boat, corrugated panels have been adopted on the side walls of the superstructure to reduce man-hours and weight.[3][2]
On the other hand, as the main engine, the Umitaka-class was equipped with the same medium-speed robust diesel main engine manufactured by Mitsui Zosen as well as the Kamome-class, while this type has a relatively lightweight high-speed diesel main engine with almost the same configuration as the scale type. It was equipped with a V8 V22 / 30 type 4-cycle single-acting V-type 16-cylinder exhaust turbocharged diesel engine produced by Kawasaki Heavy Industries under a license agreement with MAN. It did not have a self-reversing mechanism and was connected to the propeller via a fluid coupling and a reducer.[4][1]
Equipmentedit
As a sonar, the 25.5 kHz class scanning AN/SQS-11A was installed on the bottom of the twin Bofors 40 mm gun, just like the 1954 classes. On the other hand, as a radar, the 1954 boats were equipped with AN/SPS-5B, which was made in the United States and used the X band, while this model was made in Japan and used the C band, OPS-16.[3][2]
The high-angle machine gun system was similar to that of the 1954 boats, and was equipped with a Mk.1 40mm twin machine gun on the front deck. It was commanded by the Mk.63 Fire Control System (GFCS), with the director on the bridge top and the fire radar on the gun side. In addition, the hedgehog Mk.10 anti-submarine mortar is placed just before the bridge structure behind it, and a 54-type depth charge drop rail (6 depth charges for 1 line) is placed on each side of the stern. Is. However, in the 1954 boats, an anti-submarine short torpedo equipped with a guidance device was adopted instead of the 55-type depth charge projector (so-called Y gun) placed on the rear deck. The four early-built boats used short torpedo projectors that project 483 mm diameter Mk.32 short torpedoes, while the four late-built boats were made in the United States and 324. It was changed to a 68-type triple short torpedo launcher that produced a licensed Mk.32 with a millimeter diameter. This became standard equipment on the subsequent Maritime Self-Defense Force guard ships, but this class and Umitaka-class submarine chaser were the first equipped boats.[2]
^ ab「フォト・メモワール 海上自衛隊駆潜艇 全タイプ」『世界の艦船』. Vol. 675. 海人社. June 2007. pp. 45–51.
^ abcd「海上自衛隊駆潜艇の技術的特徴」『世界の艦船』. Vol. 675. 海人社. June 2007. pp. 152–157.
^ ab「海上自衛隊哨戒艦艇のテクニカル・リポート」『世界の艦船』. Vol. 466. 海人社. June 1993. pp. 82–91.
^「海上自衛隊哨戒艦艇用主機の系譜」『世界の艦船』. 海人社. June 1993. pp. 92–97.
April 12, 2024
mizutori, class, submarine, chaser, class, submarine, chasers, japan, maritime, self, defense, force, after, second, world, early, 1960s, mizutoriclass, overviewnamemizutori, classbuilderskawasaki, heavy, industries, corporation, fujinagata, shipyards, sasebo,. The Mizutori class submarine chaser was a class of submarine chasers of the Japan Maritime Self Defense Force after the Second World War in the early 1960s JDS MizutoriClass overviewNameMizutori classBuildersKawasaki Heavy Industries IHI Corporation Fujinagata Shipyards Sasebo Ship Industry Sasebo Heavy IndustriesOperators Japan Maritime Self Defense ForcePreceded byUmitaka classBuilt1959 1965In commission1960 1999Planned8Completed8Retired8General characteristicsTypeSubmarine chaserDisplacementstandard 420 t 410 long tons PC 311 315 430 t 420 long tons PC 316 440 t 430 long tons PC 319 320 full load 480 t 470 long tons PC 311 315 485 t 477 long tons PC 316 490 t 480 long tons PC 319 320 Length60 5 m 198 ft 6 in Beam7 1 m 23 ft 4 in Draft2 3 m 7 ft 7 in Depth4 4 m 14 ft 5 in Propulsion2 Kawasaki MAN V8 V22 30 diesel electric engines 2 shaftsSpeed20 kn 37 km h 23 mph Complement80Sensors and processing systemsOPS 16 air search radar AN SQS 11A sonar Mark 63 fire control systemElectronic warfare amp decoysNOLR 1Armament1 twin Bofors 40 mm gun 1 hedgehog anti submarine mortar 1 Type 54 depth charge rack 2 Mark 2 single torpedo tube PC 311 315 2 Type 68 triple torpedo tube PC 316 320 Contents 1 Design 2 Equipment 3 Ships of class 4 CitationsDesign editIn this type the navigation performance was improved and the design was rationalized based on the operational results of the preceding 1954 planned boats Kari class Kamome class The basic design was carried out by the Ship Design Association for boats in 1954 but it was transferred from this model to the Technical Research Institute of the Defense Agency at that time and the plan number was K103A 1 They were designed to be larger 1 4 times the standard displacement based on the FY1954 plan and the ship type was the same flush deck type In the 1954 classes the elaborate design with extremely thin plates led to an increase in man hours so the bow was 2 9 to 3 2 mm thick but now it is 4 5 to 6 mm and the area below the waterline is also 4 5 to 8 mm Although it was thickened to millimeters it still had a thin plate structure as a whole In addition in the 1954 classes the bridge and the deck room were separated to reduce the area on the wind pressure side but there were drawbacks such as the inconvenience of communication inside the ship in stormy weather and the inability to secure sufficient space inside the ship Therefore in this model the front and rear superstructures are integrated so that it can be easily moved back and forth even in stormy weather 2 In addition to the wing on the bridge they were equipped with the flagship equipment so the superstructure is extended 2 5 meters to the rear to provide the headquarters general affairs room In addition since the 1934 boat corrugated panels have been adopted on the side walls of the superstructure to reduce man hours and weight 3 2 On the other hand as the main engine the Umitaka class was equipped with the same medium speed robust diesel main engine manufactured by Mitsui Zosen as well as the Kamome class while this type has a relatively lightweight high speed diesel main engine with almost the same configuration as the scale type It was equipped with a V8 V22 30 type 4 cycle single acting V type 16 cylinder exhaust turbocharged diesel engine produced by Kawasaki Heavy Industries under a license agreement with MAN It did not have a self reversing mechanism and was connected to the propeller via a fluid coupling and a reducer 4 1 Equipment editAs a sonar the 25 5 kHz class scanning AN SQS 11A was installed on the bottom of the twin Bofors 40 mm gun just like the 1954 classes On the other hand as a radar the 1954 boats were equipped with AN SPS 5B which was made in the United States and used the X band while this model was made in Japan and used the C band OPS 16 3 2 The high angle machine gun system was similar to that of the 1954 boats and was equipped with a Mk 1 40mm twin machine gun on the front deck It was commanded by the Mk 63 Fire Control System GFCS with the director on the bridge top and the fire radar on the gun side In addition the hedgehog Mk 10 anti submarine mortar is placed just before the bridge structure behind it and a 54 type depth charge drop rail 6 depth charges for 1 line is placed on each side of the stern Is However in the 1954 boats an anti submarine short torpedo equipped with a guidance device was adopted instead of the 55 type depth charge projector so called Y gun placed on the rear deck The four early built boats used short torpedo projectors that project 483 mm diameter Mk 32 short torpedoes while the four late built boats were made in the United States and 324 It was changed to a 68 type triple short torpedo launcher that produced a licensed Mk 32 with a millimeter diameter This became standard equipment on the subsequent Maritime Self Defense Force guard ships but this class and Umitaka class submarine chaser were the first equipped boats 2 Ships of class editMizutori class repair submarine chaserPennant number Name Builders Laid down Launched Commissioned Redesignated DecommissionedPC 311 ASU 89 Mizutori Kawasaki Heavy Industries 13 March 1959 22 September 1959 27 February 1960 27 March 1981 27 March 1985PC 312 ASU 90 Yamadori Fujinagata Shipyards 14 March 1959 22 October 1959 15 March 1960 27 March 1981 27 March 1985PC 313 ASU 61 Otori IHI Corporation 16 December 1959 27 May 1960 13 October 1960 27 March 1982 31 October 1985PC 314 ASU 87 Kasasagi Fujinagata Shipyards 18 December 1959 31 May 1960 31 October 1960 5 March 1981 27 March 1985PC 315 ASU 62 Hatsukari Sasebo Ship Industry 22 January 1960 24 June 1960 15 November 1960 27 March 1982 31 October 1985PC 316 ASU 63 Umidori Sasebo Heavy Industries 15 February 1962 15 October 1952 30 March 1963 30 March 1964 24 March 1987PC 319 ASU 66 Shiratori 29 February 1964 8 October 1964 26 February 1965 19 March 1986 24 March 1987PC 320 ASY 92 Hiyodori 26 February 1965 25 September 1965 28 February 1966 21 May 1987 6 July 1999Citations edit a b フォト メモワール 海上自衛隊駆潜艇 全タイプ 世界の艦船 Vol 675 海人社 June 2007 pp 45 51 a b c d 海上自衛隊駆潜艇の技術的特徴 世界の艦船 Vol 675 海人社 June 2007 pp 152 157 a b 海上自衛隊哨戒艦艇のテクニカル リポート 世界の艦船 Vol 466 海人社 June 1993 pp 82 91 海上自衛隊哨戒艦艇用主機の系譜 世界の艦船 海人社 June 1993 pp 92 97 Retrieved from https en wikipedia org w index php title Mizutori class submarine chaser amp oldid 1149139690, wikipedia, wiki, book, books, library,
