The Akizuki-class destroyer is a destroyer class of the JMSDF - four ships were planned. The Akizuki Class is intended to escort the Hyuga class and Izumo class helicopter destroyers, and safeguard the other Aegis guided warships such as the Kongō class and Atago-class of the JMSDF. The destroyer provides defence against surface, airborne and undersea threats. This class used to be designated "19DD" - referring to a date on the Japanese calendar, specifically the 19th fiscal year of the Heisei period (2007).
JS Fuyuzuki (DD-118)
|Preceded by:||Takanami-class destroyer|
|Succeeded by:||Asahi-class destroyer|
|Type:||Guided missile destroyer|
|Length:||150.5 m (493 ft 9 in)|
|Beam:||18.3 m (60 ft 0 in)|
|Draft:||5.3 m (17 ft 5 in)|
|Depth:||10.9 m (35 ft 9 in)|
|Propulsion:||COGAG, two shafts, four Rolls Royce Spey SM1C turbines|
|Speed:||30 kn (56 km/h; 35 mph)|
|Sensors and |
|Aircraft carried:||1 × SH-60K helicopter|
The hull structure was based on the one of the Takanami class destroyer. There are many small improvements like, for example, cleaner lines to reduce the radar signature and decoys for torpedoes; but the principal changes can be summed up as more powerful engines, sensors, sonar and the indigenous ATECS battle management system that has been called the "Japanese AEGIS". The main gas turbine engines are standardized on a higher-powered version of the Rolls-Royce Spey SM1C, in contrast to the combination of Rolls-Royce SM1C and General Electric LM2500 turbines used in the Takanami class.
The purpose of this class is to shield the Kongō class from air, surface and subsurface threats. Main features of the class include enhanced C4ISR and Anti-Aircraft Warfare (AAW) capability, with an OYQ-11 advanced Combat Direction Sub-system (CDS) and FCS-3A AAW weapon sub-system.
Anti-submarine and Electronic Warfare (EW) capabilities of the Akizuki class have been enhanced, with a new OQQ-22 integrated sonar suite sub-system (hull-sonar and OQR-3 towed array; - a Japanese equivalent of the American AN/SQQ-89), and the NOLQ-3D digitalized EW suite sub-system. These sub-systems communicate across a NOYQ-1B wide area network. In totality these systems are comparable to those of the Zumwalt-class destroyer.
|Building no.||Pennant no.||Name/Namesake||Laid down||Launched||Commissioned||Shipyard|
|2244||DD-115||Akizuki (Autumn Moon)||17 July 2009||13 October 2010||14 March 2012||MHI, Nagasaki|
|2245||DD-116||Teruzuki (Bright Moon)||9 July 2010||15 September 2011||7 March 2013||MHI, Nagasaki|
|2246||DD-117||Suzutsuki (Clear Moon)||18 May 2011||17 October 2012||12 March 2014||MHI, Nagasaki|
|2247||DD-118||Fuyuzuki (Winter Moon)||14 June 2011||22 August 2012||13 March 2014||Mitsui, Tamano|
An active electronically scanned array (AESA) is a type of phased array antenna, which is a computer-controlled array antenna in which the beam of radio waves can be electronically steered to point in different directions without moving the antenna. In the AESA, each antenna element is connected to a small solid-state transmit/receive module (TRM) under the control of a computer, which performs the functions of a transmitter and/or receiver for the antenna. This contrasts with a passive electronically scanned array (PESA), in which all the antenna elements are connected to a single transmitter and/or receiver through phase shifters under the control of the computer. AESA's main use is in radar, and these are known as active phased array radar (APAR).
The AESA is a more advanced, sophisticated, second-generation of the original PESA phased array technology. PESAs can only emit a single beam of radio waves at a single frequency at a time. The AESA can radiate multiple beams of radio waves at multiple frequencies simultaneously. AESA radars can spread their signal emissions across a wider range of frequencies, which makes them more difficult to detect over background noise, allowing ships and aircraft to radiate powerful radar signals while still remaining stealthy.Akizuki-class destroyer
Akizuki-class destroyer may refer to:
Akizuki-class destroyer (1942), the "Type B Destroyer" used by the Imperial Japanese Navy during World War II
Super Akizuki-class destroyer, a developed version of the 1942 class
Akizuki-class destroyer (1959), a Cold War era destroyer used by the Japanese Maritime Self-Defense Force for anti-submarine warfare.
Akizuki-class destroyer (2010), a class of escort destroyers currently under construction for the Japanese Maritime Self-Defense ForceRolls-Royce Marine Spey
The Rolls-Royce Marine Spey is a marine gas turbine based on the Rolls-Royce Spey and TF41 aircraft turbofan engines. The Marine Spey currently powers seven ship classes including the Royal Navy's Type 23 frigates and provides a power output of 19.5 MW (about 26,150HP). The Marine Spey incorporates technology from the Tay and RB211.
Combatant ship classes of the Japan Maritime Self-Defense Force
|Helicopter Destroyer (DDH)|
|Guided Missile Destroyer (DDG)|
|All Purpose Destroyer (DDA)|
|Anti Submarine Destroyer (DDK)|
|Destroyer Escort (DE)|
|Frigate Multi-Purpose / Mine(FFM)|
|Patrol Frigate (PF)|
|Ocean Minehunters/Minesweepers (MHS)|
|Coastal Minehunters/Minesweepers (MHC)|