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OPS-28
OPS-28 is a Pulse-Doppler radar manufactured by Japan Radio. It is installed as a low-altitude warning / anti-water search radar mainly on the Maritime Self-Defense Force's escort ship. Variations include OPS-28-1, OPS-28B, OPS-28C, OPS-28D, OPS-28E and OPS-28F. The model numbers of the Maritime Self-Defense Force's electronic devices, including this machine, are generally based on the naming rules for military electronic devices of the U.S. military. It is for radar mounted on surface vessels, for detection / distance direction measurement / search. Overview A traveling wave tube (TWT) and a crossed power amplifier tube (CFA) are used as radar transmitters, and when used for normal voyages, they are switched to another transmitter using a magnetron. The operating frequency is C Band, and pulse compression technology has been introduced. It has been continuously improved, and there are multiple models of OPS-28B, OPS-28C, and OPS-28D depending on the mounting method of the IFF a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abukuma-class Destroyer Escort
The ''Abukuma''-class destroyer escort (or frigate) is the general-purpose destroyer escort of the Japan Maritime Self-Defense Force. It is the successor of the earlier . Design This class was planned to replace the earlier and possess both ASW capability as the successor of the and ASuW capability as the successor of the ''Yūbari'' class, but there are many enhancements as follows: Introduction of stealth technology This class is the first combatant ship of the JMSDF with stealth technology. Their superstructure has traditional vertical surfaces, but their hulls are angled to reduce their radar cross section. Electronic warfare This is the first destroyer escort class with the Naval Tactical Data System and OYQ-7 combat direction system. It is also the first destroyer escort class which has ECM capability with the OLT-3 jammer. Weapon systems The Short Range Air Defense system comprises the OPS-14 air-search radar, the OPS-28 surface search and target acquisition rada ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ōsumi-class Tank Landing Ship
The ''Ōsumi'' class (), is a Japanese amphibious transport dock. The class is also known as the ''Oosumi'' class. While the Japan Maritime Self-Defense Force (JMSDF) describes the ''Ōsumi'' class as tank landing ships (LSTs), they lack the bow doors and beaching capability traditionally associated with LSTs. Functionally, their well deck makes the ''Ōsumi'' class more like a dock landing ship (LSD). As of 2014 there are three ''Ōsumi'' vessels active with the Japanese Maritime Self-Defence Force. Design and specifications ''GlobalSecurity.org'' noted in its report on the ''Ōsumi'' class that "the program originated in a proposal for a small carrier for defensive and mine countermeasures (MCM) purposes, but this was deemed politically unacceptable, and the project was reworked as an amphibious ship" (actually a "Maritime Operational Transport", see below). Later the JMSDF returned to the idea with helicopter carriers with the larger The ''Ōsumi'' class increases its ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Takanami-class Destroyer
The is a class of destroyer serving with the Japan Maritime Self-Defense Force (JMSDF). This warship is the slightly modified class of second-generation, general-purpose destroyers of the JMSDF. Background Since FY1991, the JMSDF started construction of the second-generation, , . These destroyers are generally satisfactory for the fleet, but there is some discontent. From FY1998 onwards, a slightly modified version that corrected these dissatisfaction points was to be built: ''Takanami'' class. Design The hull design is generally based on the one of the ''Murasame'' class. However, the weapons mounted are different, and as a result, the internal structure has also been changed. The large lattice mast affected the stealthiness of the ''Murasame'' class, so in ''Takanami'' class, it was planned to change to two small masts, but that was not implemented. Although their displacement become slightly increased, there was no change to their main engines, as it was not a big differen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Murasame-class Destroyer (1994)
The is a class of destroyers, serving with the Japan Maritime Self-Defense Force (JMSDF). This is the first class of the second-generation general-purpose destroyers of the JMSDF. Background Since FY1977, the JMSDF started construction of under the eight ships / eight helicopters concept. In this concept, each flotillas would be composed of one helicopter destroyer (DDH), five general-purpose destroyers (DD), and two guided-missile destroyers (DDG). By FY1986, construction of twenty first-generation DDs (twelve and eight ) required for all four flotillas had been completed. In the original plan, it was supposed to shift to destroyer escorts for local District Forces afterwards. However, if the use of these first-generation DDs was continued to the full extent of ships' life, the relative performance obsolescence was concerned. Thus the JMSDF decided to advance the construction of the new generation DDs. And this was the first class of the second-generation DDs. Except for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asagiri-class Destroyer
The is a class of destroyer, serving with the Japan Maritime Self-Defense Force (JMSDF). It was the second class of first-generation general-purpose destroyers of the JMSDF. Background The JMSDF started construction of a since FY1977. This was the first class of under the eight ships / eight helicopters concept. In this concept, each flotilla would be composed of one helicopter destroyer (DDH), five general-purpose destroyers (DD), and two guided-missile destroyers (DDG). However, due to constraints such as budget, the design of the ''Hatsuyuki'' class was compelled to compromise in terms of C4I function, resistance, and durability. Thus, destroyers to be built after FY1983, ''Asagiri'' class were changed to an evolved design with expanded hull and enhanced equipment. Design The hull is an enlarged type of ''Hatsuyuki'' class, and the hull form is of the shelter deck style. Also, as the latter batch of the ''Hatsuyuki'' class, the upper structure is made of steel, but since it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atago-class Destroyer
The in the Japan Maritime Self-Defense Force is a modified version of the equipped with the Aegis Combat System. Background The Maritime Self-Defense Force (MSDF) began construction of the Aegis-equipped in FY1988 as the core ship for air defense of its fleet. With the commission of the Kongo class, each of the four had one Tartar-equipped destroyer and one Aegis-equipped destroyer. In the 2000s, the steam-powered s were nearing the end of their life, and their Tartar Weapon Systems were becoming obsolete. As their replacements, two Aegis-equipped destroyers, ''Atago'' class, were built in the FY2002 and 2003 budget. Design The design is fundamentally an improved and scaled-up version of the ''Kongō''-class destroyers with a 4-meter extension of the hull. Just as the ''Kongō'' class, the superstructure is larger than aboard the American counterparts, Flight IIA. One of the most obvious changes is an additional hangar to carry one SH-60K helicopter. In comparison to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kongō-class Destroyer
The of guided-missile destroyers in the Japan Maritime Self-Defense Force are equipped with the Aegis Combat System, and is the first of few ship classes outside the United States to have that capability. Following a decision made in December 2003, Japan is upgrading their ''Kongo''-class destroyers with Aegis Ballistic Missile Defense System. The upgrade involves a series of installations and flight tests to take place from 2007 to 2010. JS ''Kongo'' was the first ship to have the BMD upgrade installed. Background The JMSDF built under FY1960 program and started shipboard operation of surface-to-air missiles. She had been equipped with analog-version of the Tartar Guided Missile Fire Control System. A fully-digitized system was adopted on the next-generation , and later a combat direction system based on the Naval Tactical Data System was added. Nevertheless, the JMSDF estimated that its fleets would not survive against Soviet airstrikes, especially Tupolev Tu-22M bombers and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JS Kaga
JS ''Kaga'' (DDH-184) is a helicopter carrier being converted into an aircraft carrier beginning in March, 2022. Officially classified as a multi-purpose operation destroyer, she is the second ship in the of the Japan Maritime Self-Defense Force (JMSDF), the other being . Her namesake arises from in present-day Ishikawa Prefecture. The ship bears the same name, and is slightly longer in length than, the World War II-era , an aircraft carrier produced in 1928, which participated in the attack on Pearl Harbor. ''Kaga'' and ''Izumo'' are the first aircraft carriers built by Japan since the end of World War II. ''Kaga'' was built as part of a wider Japanese military buildup, triggered from heightened Sino-Japanese tensions regarding the contested ownership of the Senkaku Islands. Construction ''Kaga'' was intended to replace the aging , based on the schedule outlined within the 23 Mid-term Defence Capability Maintenance Plan to construct a 19,500-ton helicopter destroyer. Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shirane-class Destroyer
The ''Shirane''-class destroyers were a pair of Japanese destroyers originally built during the late 1970s. They are built around a large central hangar which houses up to three helicopters and they are the natural successor of the s. Design The ''Shirane'' class incorporates an improved design based on the ''Haruna''-class destroyers. The ships propulsion include two steam boilers with two shafts that produce 70.000 hp and gives a maximum speed of 32 knots. Its armament includes two Mk.42 127mm guns, two 20-mm Phalanx close-in weapon systems, one Surface-to-air RIM-7 Sea Sparrow launcher, torpedoes and anti-submarine rockets. The ships has been replaced by the new s. Ships in the class Operational use On December 15, 2007, a fire broke out on board ''Shirane'' near the rudder house as it was anchored at Yokosuka. It took seven hours to extinguish the fire, which injured four crew members. On 27 October 2009, JS ''Kurama'' collided with a South Korean container ship u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JS Ariake (DD-109)
JS ''Ariake'' (DD-109) (ありあけ) is the ninth ship of s. She was commissioned on 6 March 2002. Design The hull design was completely renovated from first-generation DDs. In addition to increasing the size in order to reduce the underwater radiation noise, both superstructure and hull was inclined to reduce the radar cross-section. There is however no angled tripod mainmast like the one of the American because of the heavy weather of the Sea of Japan in winter. The aft was designed like a "mini-Oranda-zaka" as with the to avoid interference between helicopters and mooring devices. Destroyers built under the First Defense Build-up Plan, including the former , adopted a unique long forecastle style called "Oranda-zaka". The engine arrangement is COGAG as same as ''Asagiri'' class, but a pair of engines are updated to Spey SM1C. And the remaining one pair are replaced by LM2500, same as ''Kongō'' class. Construction and career ''Ariake'' was laid down on 18 May 1999 at Mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JS Asagiri
JS ''Asagiri'' (DD-151) is an of the Japan Maritime Self-Defense Force. Development and design The ''Asagiri'' class is equipped for combat and interception missions, and is primarily armed with anti-ship weapons. They carries two of the Mk-141 Guided Missile Launching System (GMLS), which are anti-ship missile systems. The ship is also fitted to be used against submarines. She also carries the Mk-32 Surface Vessel Torpedo Tubes (SVTT), which can be used as an anti-submarine weapon. The ship has two of these systems abeam to starboard and to port. They are fitted with an Oto-Melara 62-caliber gun to be used against sea and air targets. They are long. The ship has a range of at with a top speed of . The ship can have up to 220 personnel on board. The ship is also fitted to accommodate for one aircraft. The ship's flight deck can be used to service a SH-60J9(K) Seahawk helicopter. Construction and career She was laid down on 13 February 1985 and launched on 19 September ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mashū-class Replenishment Ship
The ''Mashū'' class is a series of replenishment oilers of the Japan Maritime Self-Defense Force. They were built from 2002 to 2004. The ships have the hull designator AOE. The ''Mashū'' class was designed as an enlarged, improved version of the ''Towada''-class fast combat support ships. The vessels are capable of mounting 2 Phalanx CIWS The Phalanx CIWS (often spoken as "sea-wiz") is a gun-based close-in weapon system to defend military watercraft automatically against incoming threats such as aircraft, missiles, and small boats. It was designed and manufactured by the Gen ... by design. They are in commission from 2004 onwards. List of ships Gallery File:JS Mashū(AOE-425) right front view at JMSDF Maizuru Naval Base April 13, 2019 01.jpg, JS ''Mashū'' in Maizuru Naval Base on 13 April 2019. File:JMSDF December 2016 10.jpg, JS ''Ōmi'' underway in January 2017. References External links {{Mashū-class replenishment ship Auxiliary replenishment ship ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
