Hayabusa class patrol boat
Encyclopedia
The Hayabusa class is a guided missile
Guided Missile
Guided Missile is a London based independent record label set up by Paul Kearney in 1994.Guided Missile has always focused on 'the underground', preferring to put out a steady flow of releases and developing the numerous GM events around London and beyond....
patrol boat
Missile boat
A Missile Boat is a small craft armed with anti-ship missiles. Being a small craft, missile boats are popular with nations interested in forming an inexpensive navy...
class of the Japan Maritime Self-Defense Force
Japan Maritime Self-Defense Force
The , or JMSDF, is the naval branch of the Japan Self-Defense Forces, tasked with the naval defense of Japan. It was formed following the dissolution of the Imperial Japanese Navy after World War II....
. Six boats were built between 2002 and 2004.
The Japan Maritime Self-Defense Force initially built three hydrofoil missile boats of the PG 1-go class
Sparviero class patrol boat
The Sparviero class is a Guided Missile Patrol Boat designed for and formerly used by the Italian Navy. The Japanese 1-go class missile boat is an updated version formerly used by the Japan Maritime Self-Defense Force . They are the fastest craft in Italian and Japanese naval history...
between 1993 and 1995. However, after commissioning, problems with seaworthiness and operational range at mid-speed became clear. As a result, no more ships of this first class of Japanese missile boat were built.
The Hayabusa class was designed to correct these problems. After an incident off the Noto Peninsula
Noto Peninsula
thumb|right|240px|Landsat image with high-resolution data from Space Shuttle.Noto Peninsula is a peninsula that projects north into the Sea of Japan from the coast of Ishikawa prefecture in central Honshū, the main island of Japan...
involving a North Korea
North Korea
The Democratic People’s Republic of Korea , , is a country in East Asia, occupying the northern half of the Korean Peninsula. Its capital and largest city is Pyongyang. The Korean Demilitarized Zone serves as the buffer zone between North Korea and South Korea...
spy ship, two ships of the class were included in the 1999 fiscal year plan. They were named for World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...
Japanese ships, the torpedo boat Hayabusa and the minesweeper Wakataka.
Hull
The boat's displacement was enlarged to four times that of the PG 1-go class to improve seaworthiness. The maximum speed was increased to improve the ability to intercept ships; however, the speed increase proved to be difficult to implement.Both double-hull and single-hull designs were considered; the single-hull design was selected for reasons of hull strength and seaworthiness. The hull is long and narrow with a V-shaped bottom, allowing for a high hull speed and improved high-speed stability.
Stealth
Stealth technology
Stealth technology also termed LO technology is a sub-discipline of military tactics and passive electronic countermeasures, which cover a range of techniques used with personnel, aircraft, ships, submarines, and missiles, to make them less visible to radar, infrared, sonar and other detection...
characteristics were incorporated. The slope of the superstructure, designed to minimize direct radar reflection, was chosen using computer simulation of the radar cross section. The tripod mast and Stealthshield 76mm gun also have stealth features.
Propulsion
Three LM500-G07 gas turbineGas turbine
A gas turbine, also called a combustion turbine, is a type of internal combustion engine. It has an upstream rotating compressor coupled to a downstream turbine, and a combustion chamber in-between....
engines, built under license from General Electric
General Electric
General Electric Company , or GE, is an American multinational conglomerate corporation incorporated in Schenectady, New York and headquartered in Fairfield, Connecticut, United States...
by Ishikawajima-Harima, provide the main propulsion. The gas turbine was changed about a main engine at a first budget budget request stage corresponding to a demand speed increase after the event of a suspicious ship though was examined as two. Each engine is displayed to the hull in parallel, and connected with the nozzle of one water jet propulsion severally. The output has increased by 400 horsepower, though the LM500-G07 engine is the one installed in the PG NO.1 class and an isomorph.
Armament
The main armament is a pair of SSM-1B ship-to-ship missile twin launchers installed in the stern and a front deck Otobreda 76 mm gunOtobreda 76 mm
The Otobreda 76 mm gun is a naval artillery piece built by the Italian defence conglomerate Otobreda. It is based on the Oto Melara 76mm/L62 Allargato, which was bigger and heavier...
. Additionally, two 12.7mm M2 machine guns are installed on the back of the bridge.
As for the weapon system of the peregrine type, the OYQ-8B strategy information processor is mainly composed. The performance improves rapidly than UYK-20 that is the small-scale computer before the fee the age though this uses a small AN/UYK-44 computer, and the correspondence of Link 11 that was not able to be accomplished with OYQ-5 that uses UYK-20 is accomplished. As a result, the attack of other sea forces and the air units can be adjusted. Moreover, the Maritime Operational Force System that is the key command system of the Maritime Self-Defense Force is installed, and orders and intelligence information can be received from Regional District Headquarters etc. by satellite communication.
List of ships
| b> Name | b> Number | b> Laiddown | b> Launched | b> Commissioned | b> Decommissioned | b> Status |
| Hayabusa(はやぶさ) | PG-824 | 9 November 2000 | 13 June 2001 | 25 March 2002 | Active | |
| Wakataka(わかたか) | PG-825 | 9 November 2000 | 13 September 2001 | 25 March 2002 | Active | |
| Otaka(おおたか) | PG-826 | 2 October 2001 | 13 May 2002 | 24 March 2003 | Active | |
| Kumataka(くまたか) | PG-827 | 2 October 2001 | 13 August 2002 | 24 March 2003 | Active | |
| Umitaka(うみたか) | PG-828 | 11 December 2002 | 21 May 2003 | 24 March 2004 | Active | |
| Shiritaka(しらたか) | PG-829 | 11 December 2002 | 8 August 2003 | 24 March 2004 | Active |