Tachikaze-class destroyer

The Tachikaze-class destroyer is a second generation guided missile destroyer class, formerly in service with the Japan Maritime Self-Defense Force (JMSDF). The ships of this class have had successive improvements after their completion, especially to their C4I systems. These air-defense warships are the natural successor to the first generation air-defense ship, the Amatsukaze-class destroyer, and they were in turn, followed by newer air-defense ships, the Hatakaze class.

The Tachikaze class was equipped with the Tartar-D system as the key weapon system, the fleet-area air defense weapon system with the Standard-1 MR missile. At the same time, this was the American first native integrated weapon system with the Naval Tactical Data System (NTDS), so this class was the first of the Maritime Self Defense Force's ships that utilised computers widely. As the NTDS, OYQ-1 Weapon Entry System (WES) was on board on the lead ship, Tachikaze. The OYQ-1 WES was based on the technology of the NYYA-1 which was on board on the lead ship of the Takatsuki class, and this system was the first Japanese shipboard C4I system with the architecture of NTDS. On the second ship, Asakaze, the improved OYQ-2 Target Designation System (TDS) was on board. And the third ship, Sawakaze, introduced the new-generation combat direction system, OYQ-4.

The Tachikaze-class destroyers' weapon systems include one Mk 13 missile launcher for the Standard-1 MR surface-to-air missile, one Type 74 octuple launcher (Japanese version of the American Mark 16 GMLS) for the ASROC anti-submarine rockets, eight Boeing Harpoon anti-ship missile, two 20-mm Phalanx CIWS gun mounts, two Type 68 (Model HOS-301) triple 324 mm (12.8 in) torpedo tubes, and two 5-inch/54 caliber Mark 42 rapid-fire guns.

In 1998, Tachikaze was converted to be the flagship of the Fleet Escort Force. The aft 5-inch gun was replaced with a fleet command area. Tachikaze was decommissioned in 2007. Sawakaze then succeeded her in the flagship role.

The ships of the Tachikaze class were decommissioned beginning in 2007.

All three vessels of the Tachikaze class were named after destroyers of the Imperial Japanese Navy, with Tachikaze and Asakaze being lost to enemy action during the war.

JDS Asakaze DDG169
JDS Asakaze at Pearl Harbor
JDS Tachikaze
JDS Tachikaze
Class overview
Name: Tachikaze class
Builders: Mitsubishi Heavy Industries
Operators:  Japan Maritime Self-Defense Force
Preceded by: Amatsukaze
Succeeded by: Hatakaze class
Built: 1973-1983
In service: 1976–2010
Completed: 3
Retired: 3
General characteristics
Type: Guided missile destroyer
Displacement:
  • 3,850 long tons (3,910 t) standard
  • 3,950 long tons (4,010 t) (DDG170)
Length: 143 m (469 ft 2 in)
Beam: 14.3 m (46 ft 11 in)
Draft:
  • 4.6 m (15 ft 1 in)
  • 4.7 m (15 ft 5 in) (DDG170)
Propulsion:
Speed: 32 knots (37 mph; 59 km/h)
Complement: 250; 230 (DDG168); 255 (DDG170)
Armament:

Ships in the class

Building no. Pennant no. Name Laid down Commissioned Decommissioned Home port
2308 DDG-168 Tachikaze 19 June 1973 26 March 1976 15 January 2007 Sasebo (1976–1995)
Yokosuka (1995–2007)
2309 DDG-169 Asakaze 27 May 1976 27 March 1979 12 March 2008 Yokosuka (1979–1995)
Sasebo (1995–2008)
2310 DDG-170 Sawakaze 14 September 1979 30 March 1983 25 June 2010 Sasebo (1983–2007)
Yokosuka (2007–2010)

References

  • Heihachiro Fujiki (August 2007). "A history of JMSDF's missile destroyers". Ships of the World (in Japanese). Kaijinn-sha (678): 98–103.

External links

5"/54 caliber Mark 42 gun

The Mark 42 5"/54 caliber gun (127mm) is a naval gun (naval artillery) mount used by the United States Navy and other countries. It consisted of the Mark 18 gun and Mark 42 gun mount. United States naval gun terminology indicates the gun fires a projectile 5 inches (127.0 mm) in diameter, and the barrel is 54 calibers long (barrel length is 5" × 54 = 270" or 6.9 meters.) In the 1950s a gun with more range and a faster rate of fire than the 5"/38 caliber gun used in World War II was needed, therefore, the gun was created concurrently with the 3"/70 Mark 26 gun for different usages. The 5"/54 Mk 42 is an automatic, dual-purpose (air / surface target) gun mount. It is usually controlled remotely from the Mk 68 Gun Fire Control System, or locally from the mount at the One Man Control (OMC) station.The self-loading gun mount weighs about 60.4 long tons (61.4 t) including two drums under the mount holding 40 rounds of semi-fixed case type ammunition. The gun fires 31.75 kg (70.0 lb) projectiles at a velocity of 2,650 ft/s (807.7 m/s). Maximum rate of fire is 40 rounds per minute. Magazine capacity is 599 rounds per mount. The Mark 42 mount originally was equipped for two on-mount gunners, one surface and one antiaircraft, but the antiaircraft gunner position was scrapped later on when the increasing speed of naval aircraft made manual aiming of antiaircraft weapons impractical. The Mark 45 lightweight (22.1 long tons (22.5 t)) gun mount began replacing the Mk 42 mount in 1971 for easier maintenance and improved reliability in new naval construction for the United States Navy.

FCS-1

FCS-1 was a Japanese ship gun fire-control system (GFCS).

Guided missile destroyer

A guided-missile destroyer is a destroyer designed to launch guided missiles. Many are also equipped to carry out anti-submarine, anti-air, and anti-surface operations. The NATO standard designation for these vessels is DDG. Nations vary in their use of destroyer D designation in their hull pennant numbering, either prefixing or dropping it altogether. The U.S. Navy has adopted the classification DDG in the American hull classification system.

In addition to the guns, a guided-missile destroyer is usually equipped with two large missile magazines, usually in vertical-launch cells. Some guided-missile destroyers contain powerful radar systems, such as the United States’ Aegis Combat System, and may be adopted for use in an anti-missile or ballistic-missile defense role. This is especially true of navies that no longer operate cruisers, so other vessels must be adopted to fill in the gap.

JDS Amatsukaze

JDS Amatsukaze (DDG-163) was a guided missile destroyer (DDG) of the Japan Maritime Self-Defense Force (JMSDF), and the only ship of her class. She was the first Japanese surface combatant equipped with surface-to-air missiles. She was launched on 5 October 1963 and decommissioned in 1995.

Amatsukaze was planned as the DDG variant of the preceding Akizuki-class anti-aircraft destroyers, mounting the American Tartar Guided Missile Fire Control System weapon system. However, the Tartar system turned out to be larger than expected, so Amatsukaze's design was altered completely, with an enlarged hull and with a shelter-deck design based on that of the Isuzu class and uprated steam turbines.

Japanese destroyer Asakaze

Four Japanese destroyers have been named Asakaze :

Japanese destroyer Asakaze (1905), a Kamikaze-class destroyer launched in 1905 and scuttled in 1929

Japanese destroyer Asakaze (1922), a Kamikaze-class destroyer launched in 1922 and sunk in 1944

JDS Asakaze (DD-181), a Gleaves-class destroyer launched in 1941 as USS Ellyson she was acquired by Japan in 1954 and served until 1970

JDS Asakaze (DDG-169), a Tachikaze-class destroyer commissioned in 1979 and stricken in 2008

Japanese destroyer Sawakaze

Two Japanese destroyers have been named Sawakaze :

Japanese destroyer Sawakaze (1919), a Minekaze-class destroyer launched in 1919 and scrapped in 1948

JDS Sawakaze (DDG-170), a Tachikaze-class destroyer commissioned in 1983 and stricken in 2010

Japanese destroyer Tachikaze

Two Japanese destroyers have been named Tachikaze :

Japanese destroyer Tachikaze (1921), a Minekaze-class destroyer launched in 1921 and sunk in 1944

JDS Tachikaze (DDG-168), a Tachikaze-class destroyer commissioned in 1976 and stricken in 2007

List of ship decommissionings in 2007

The list of ship decommissionings in 2007 includes a chronological list of all ships decommissioned in 2007.

Mack (ship)

In naval architecture, a Mack is a structure which combines the radar masts and the exhaust stack of a surface ship, thereby saving the upper deck space used for separate funnels and the increasingly large tripod masts used to carry heavy radar aerials. The word is a composite (portmanteau) of "mast" and "stack". It is a common design feature on post-WWII warships, (e.g. the rebuilt Baltimore class cruisers), and on some cruise ships.

The Royal Navy used this design feature on the 1944 Weapon class destroyers, and the subsequent Darings, and in the diesel-engined Type 41 "Cat" class and Type 61 "Cathedral" class frigates of the 1950s. It provided unbalanced and unattractive designs, which led to a reversion to separate masts and funnels in subsequent RN vessels.

The close proximity of exhaust fumes to delicate radio and radar equipment led to corrosion problems, making macks unpopular for later designs.

Mitsubishi Heavy Industries

Mitsubishi Heavy Industries, Ltd. (三菱重工業株式会社, Mitsubishi Jūkōgyō Kabushiki-kaisha, informally MHI) is a Japanese multinational engineering, electrical equipment and electronics company headquartered in Tokyo, Japan. MHI is one of the core companies of the Mitsubishi Group.

MHI's products include aerospace components, air conditioners, aircraft, automotive components, forklift trucks, hydraulic equipment, machine tools, missiles, power generation equipment, printing machines, ships and space launch vehicles. Through its defense-related activities, it is the world's 23rd-largest defense contractor measured by 2011 defense revenues and the largest based in Japan.On November 28, 2018, the company was ordered by the South Korea Supreme Court to pay compensation for forced labor which the company oversaw during the Japanese occupation of Korea.

Tachikaze-class destroyers
Combatant ship classes of the Japan Maritime Self-Defense Force
Helicopter Destroyer (DDH)
Guided Missile Destroyer (DDG)
Destroyer (DD)
All Purpose Destroyer (DDA)
Anti Submarine Destroyer (DDK)
Destroyer Escort (DE)
Frigate Multi-Purpose / Mine(FFM)
Patrol Frigate (PF)
Submarine (SS)
Ocean Minehunters/Minesweepers (MHS)
Coastal Minehunters/Minesweepers (MHC)
Amphibious Warfare

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