JDS Haruna
JS ''Haruna'' (DDH-141) was the lead ship of the ''Haruna''-class helicopter destroyer of the Japanese Maritime Self Defense Force. Overview These ships were Japan's first helicopter-equipped destroyer (DDH), and their greatest feature was that it can carry and operate three helicopters in spite of its 5000t class. Such ships, including the development-improved ''Shirane''-class destroyer, can be said to be the only one in the world to this day, and strongly reflect Japan's special military ideology. In terms of equipment, it was the first self-defense ship to be equipped with a fin stabilizer to stabilize its attitude during helicopter operation, and a landing restraint device (bear trap) was installed to improve the safety and efficiency of flight work on a swaying ship. Until the introduction of the ''Kongō''-class destroyer ( Aegis ship), this class (including the ''Shirane''-class destroyer) were the largest escort ship of the JMSDF. Construction and career ''Haru ...
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Japanese Battleship Haruna
was a warship of the Imperial Japanese Navy during :World War I and :World War II. Designed by the British naval engineer George Thurston and named after Mount Haruna, she was the fourth and last battlecruiser of the , amongst the most heavily armed ships in any navy when built. Laid down in 1912 at the Kawasaki Shipyards in Kobe, ''Haruna'' was formally commissioned in 1915 on the same day as her sister ship, . ''Haruna'' patrolled off the Chinese coast during World War I. During gunnery drills in 1920, an explosion destroyed one of her guns, damaged the gun turret, and killed seven men. During her career, ''Haruna'' underwent two major reconstructions. Beginning in 1926, the Imperial Japanese Navy rebuilt her as a battleship, strengthening her armor and improving her speed and power capabilities. In 1933, her superstructure was completely rebuilt, her speed was increased, and she was equipped with launch catapults for floatplanes. Now fast enough to accompany Japan's g ...
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Haruna-class Destroyer
The ''Haruna''-class destroyer was a destroyer class built for the Japan Maritime Self-Defense Force (JMSDF) in the early 1970s. These helicopter carrying destroyers (DDH) are built around a large central hangar which houses up to three helicopters. Originally, the Coastal Safety Force and its successor, the JMSDF, had intended to enable its fleet aviation operating capability. In 1960, the Defense Agency planned to construct one helicopter carrier (CVH) with the Second Defense Build-up Plan, but this project was shelved and finally cancelled because the JMSDF changed their plan to dispersing its fleet aviation assets among destroyers, not concentrating in a few helicopter carriers. The Japanese DDH was planned to be a hub with this dispersing fleet aviation concept with their logistics service capability for aircraft. At the beginning, equipment of this class were similar to those of the DDA. All weapons, two 5-inch/54 caliber Mark 42 (Type 73) guns and one Type 74 octuple missi ...
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JDS ''Yukikaze''
JDS may refer to: * ''J.D.s'', a queer punk zine * Janata Dal (Secular), an Indian political party * Japan Defense Ship, a ship prefix * Java Desktop System * JDS Development, an American real-estate company * JDS Uniphase Corporation * Jewish day school ** especially Charles E. Smith Jewish Day School, in Maryland * John Dewey Society * Journalists for Democracy in Sri Lanka * Junior dos Santos, a former UFC Heavyweight Champion Ultimate Fighting Championship (UFC) champions are fighters who have won UFC championships. Historical notes At the time of the UFC's inception in 1993, mixed martial arts was not sanctioned in the United States, and did not include weight classe ...

JDS Narushio (SS-569)
JDS ''Narushio'' (SS-569) was the fourth boat of thes. She was commissioned on 28 September 1973. Construction and career ''Isoshio'' was laid down at Mitsubishi Heavy Industries Kobe Shipyard on 9 July 1970 and launched on 18 March 1972. She was commissioned on 25 November 1972, into the 1st Submarine Group. On 28 September 1973, she was transferred to the 5th Submarine, which was newly commissioned under the 1st Submarine Group, along with JDS Isoshio. During the Juyu Yomaru incident that occurred on 9 November 1974, the 10th Yuyo Maru, which had fallen into difficulty extinguishing the fire, was dispatched together with JDS Haruna, JDS Takatsuki, JDS Mochizuki and JDS Yukikaze to sink the ship. After arriving at the disposal area on the afternoon of November 28, the submarine launched a salvo of torpedoes and fired four Mk37 torpedoes, but due to mechanical failures, misalignment, and lack of warhead power, the ship failed to sink. Participated in Hawaii dispatch trai ...
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JDS ''Mochizuki''
JDS may refer to: * ''J.D.s'', a queer punk zine * Janata Dal (Secular), an Indian political party * Japan Defense Ship, a ship prefix * Java Desktop System * JDS Development, an American real-estate company * JDS Uniphase Corporation * Jewish day school ** especially Charles E. Smith Jewish Day School, in Maryland * John Dewey Society * Journalists for Democracy in Sri Lanka * Junior dos Santos, a former UFC Heavyweight Champion Ultimate Fighting Championship (UFC) champions are fighters who have won UFC championships. Historical notes At the time of the UFC's inception in 1993, mixed martial arts was not sanctioned in the United States, and did not include weight classe ...

JDS ''Takatsuki''
JDS may refer to: * ''J.D.s'', a queer punk zine * Janata Dal (Secular), an Indian political party * Japan Defense Ship, a ship prefix * Java Desktop System * JDS Development, an American real-estate company * JDS Uniphase Corporation * Jewish day school ** especially Charles E. Smith Jewish Day School, in Maryland * John Dewey Society * Journalists for Democracy in Sri Lanka * Junior dos Santos, a former UFC Heavyweight Champion Ultimate Fighting Championship (UFC) champions are fighters who have won UFC championships. Historical notes At the time of the UFC's inception in 1993, mixed martial arts was not sanctioned in the United States, and did not include weight classe ...

Tokyo Bay
is a bay located in the southern Kantō region of Japan, and spans the coasts of Tokyo, Kanagawa Prefecture, and Chiba Prefecture. Tokyo Bay is connected to the Pacific Ocean by the Uraga Channel. The Tokyo Bay region is both the most populous and largest industrialized area in Japan. Names In ancient times, Japanese knew Tokyo Bay as the . By the Azuchi–Momoyama period (1568–1600) the area had become known as after the city of Edo. The bay took its present name in modern times, after the Imperial court moved to Edo and renamed the city Tokyo in 1868. Geography Tokyo Bay juts prominently into the Kantō Plain. It is surrounded by the Bōsō Peninsula in Chiba Prefecture to the east and the Miura Peninsula in Kanagawa Prefecture to the west. The shore of Tokyo Bay consists of a diluvial plateau and is subject to rapid marine erosion. Sediments on the shore of the bay make for a smooth, continuous shoreline. Boundaries In a narrow sense, Tokyo Bay is the area north of ...
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The Juyu Yomaru Incident
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pron ...
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Launched (ship)
Ceremonial ship launching involves the performance of ceremonies associated with the process of transferring a vessel to the water. It is a nautical tradition in many cultures, dating back thousands of years, to accompany the physical process with ceremonies which have been observed as public celebration and a solemn blessing, usually but not always, in association with the launch itself. Ship launching imposes stresses on the ship not met during normal operation and, in addition to the size and weight of the vessel, represents a considerable engineering challenge as well as a public spectacle. The process also involves many traditions intended to invite good luck, such as christening by breaking a sacrificial bottle of champagne over the bow as the ship is named aloud and launched. Methods There are three principal methods of conveying a new ship from building site to water, only two of which are called "launching". The oldest, most familiar, and most widely used is th ...
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Keel Laying
Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one of the four specially celebrated events in the life of a ship; the others are launching, commissioning and decommissioning. In earlier times, the event recognized as the keel laying was the initial placement of the central timber making up the backbone of a vessel, called the keel. As steel ships replaced wooden ones, the central timber gave way to a central steel beam. Modern ships are most commonly built in a series of pre-fabricated, complete hull sections rather than around a single keel. The event recognized as the keel laying is the first joining of modular components, or the lowering of the first module into place in the building dock. It is now often called "keel authentication", and is the ceremonial beginning of the ship's life ...
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Aegis Combat System
The Aegis Combat System is an American integrated naval weapons system developed by the Missile and Surface Radar Division of RCA, and it is now produced by Lockheed Martin. Initially used by the United States Navy, Aegis is now used also by the Japan Maritime Self-Defense Force, Spanish Navy, Royal Norwegian Navy, Republic of Korea Navy, and Royal Australian Navy, and is planned for use by the Royal Canadian Navy. As of 2022, a total of 110 Aegis-equipped ships have been deployed, and 71 more are planned (see operators). Aegis BMD (Ballistic Missile Defense) capabilities are being developed as part of the NATO missile defence system. Etymology The word "Aegis" is a reference that dates back to Greek mythology, with connotations of a protective shield, as the Aegis was the buckler (shield) of Zeus, worn by Athena. Overview The Aegis Combat System (ACS) is an advanced command and control (command and decision, or C&D, in Aegis parlance) system that uses powerful computers an ...
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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 ...
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