Aso-class patrol vessel

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Japan Coast Guard PL42 Dewa.JPG
Dewa (PL-42)
Class overview
Name: Aso class
Builders: Mitsubishi Heavy Industries, Universal Shipbuilding Corporation
Operators: Ensign of the Japanese Coast Guard.svg Japan Coast Guard
Preceded by: Ojika-class
Succeeded by: Hateruma-class
Built: 2002 – 2006
In commission: 2005 – Present
Completed: 3
Active: 3
General characteristics
Type: 1,000 ton-class PL (Patrol vessel, Large)
Displacement: 770[clarification needed]
Length: 79.0 m (259.2 ft)
Beam: 10.0 m (32.8 ft)
Depth: 6 m (20 ft)
Speed: 30+ knots
Complement: 30
Armament: One Bofors 40 mm L/70 gun with optical FCS
Armour: Ballistic protection over certain areas

Aso class patrol vessel is a class of PL type patrol vessel of the Japan Coast Guard. PL stands for Patrol vessel Large, and the class name "Aso" is named after Mount Aso, the largest active volcano in Japan.

This class is one of the new patrol vessel classes to intercept spy boats of DPRK. These classes are called "高速高機能大型巡視船", High-speed, high-functionality patrol vessel, large. Having Bofors 40 mm L/70 autocannon with fire-control system, this class is safely able to deal with heavily armed spy boats of DPRK which intrude into Japanese waters. The hull of this class is bulletproof in case of close-range firefights.

In the back of the bridge's side, this class has display devices that can be used to instruct other ships to stop even at nighttime. And on the bridge superstructure, this class is equipped with the LIDAR system to acquire targets with high accuracy. At the same time, this system enables them to perform search and rescue missions more safely.

Ships in the class[edit]

Ships in the class
Pennant Number Ship Name Builder Commission Decommission Homeport
PL41 Aso Mitsubishi Heavy Industries 15 March 2005 Fukuoka
PL42 Dewa Universal Shipbuilding Corporation 12 April 2006 Akita
PL43 Hakusan Kanazawa

See also[edit]


Future Reading[edit]

  • "Ships of Japan Coast Guard". Ships of the World. Kaijinn-sha (692): 51. July 2008. 
  • Shigehiro Sakamoto (July 2008). "60th Anniversary of JCG: For near future". Ships of the World. Kaijinn-sha (692): 132–137. 
  • Yoshifumi Mayama (July 2008). "60th Anniversary of JCG: Technical history of its ship". Ships of the World. Kaijinn-sha (692): 138–143.