Tsurugi-class patrol vessel

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Hotaka (PS-202)
Class overview
Name: Tsurugi class
Operators: Ensign of the Japanese Coast Guard.svg Japan Coast Guard
Built: 2000–2005
In commission: 2001–Present
Planned: 15
Completed: 6
Cancelled: 9
Active: 6
General characteristics
Type: High-speed, Special-Purpose Patrol Vessels
Displacement: 220 Gross tonnage
Length: 50.0 m (164.0 ft)
Beam: 8.0 m (26.2 ft)
Depth: 4 m (13 ft)
Propulsion:
Speed: 50+ knots
Armament: 1 × JM61 20mm gun with RFS

The Tsurugi classJapanese: つるぎ型巡視船) is a class of small patrol vessel of the Japan Coast Guard (JCG). The development of this class was one of the earliest attempts of the JCG to deal with spy boats from North Korea. In March 1999, the JCG tried to intercept vessels of unknown nationality suspected to be North Korean, but the unknown vessels were too fast, and the Japan Maritime Self-Defense Force had to be called to intercept the unknown vessels. As a consequence of this failure, JCG realized their need for high speed interceptors.[1]

The Tsurugi class is referred to as High-speed, Special-Purpose Patrol Vessels (高速特殊警備船). Planned as the top-tier of JCG intercept spy boats, this class features very high speed and accurate firepower. Its weaponry includes a JM61 20 mm Gatling gun, and a Remote Firing System consisting of a remote weapon system with a laser-optical fire-control system.[2]

In the Battle of Amami-Ōshima, the combination of the 20 mm gun with the RFS proved its worth, but it became clear that its effective range was insufficient against weapons on board the North Korean spy boats such as 9K38 Igla MANPADS and B-10 recoilless rifle. In response, the JCG intends to organize mobile flotillas combining Tsurugi-class vessels with vessels of the Hida class and the Aso class, which have Bofors 40 mm L/70 autocannons.[3]

Ships in the class

PS-201 Tsurugi
Commissioned: February 2001
Home port: Sakata, Yamagata
PS-202 Hotaka
Commissioned: March 2001
Home port: Maizuru, Kyoto
PS-203 Norikura
Commissioned: March 2001
Home port: Fushiki, Toyama
PS-204 Kaimon
Commissioned: April 2004
Home port: Naze, Kagoshima
PS-205 Asama
Commissioned: April 2004
Home port: Hamada, Shimane
PS-206 Howo
Commissioned: January 2005
Home port: Nagasaki

See also

References

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  1. Yoshifumi Mayama 2008, p142.
  2. Shigehiro Sakamoto 2008, p134.
  3. Shigehiro Sakamoto 2008, p135.