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Patrol & mine warfare vessels2008–presentProfile in progress
1,000 ton-class PL (Patrol vessel, Large)
Hateruma-class patrol vessel is a 1,000 ton-class PL (Patrol vessel, Large). It was built by Mitsui Engineering & Shipbuilding , Mitsubishi Heavy Industries. Reported operators include Japan Coast Guard.
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Hateruma class
Mitsui Engineering & Shipbuilding , Mitsubishi Heavy Industries
Japan Coast Guard
Aso class
Kunigami class
2005–2010
2008–present
9
9
1,000 ton-class PL (Patrol vessel, Large)
1,300 Gross tonnage
89.0 m (292.0 ft)
11.0 m (36.1 ft)
4 × Waterjets 4 × diesel engines
30 knots (56 km/h; 35 mph)
2 × 7 m class RHIBs 2 × 4.8 m class RHIBs
30
One Mk44 Bushmaster II 30 mm gun with optical FCS
aft helicopter deck and refueling facilities
Ships of this class are equipped with one single-mounted Mk44 Bushmaster II 30mm autocannon with laser-optical fire-control system . The 30 mm caliber autocannon is an entirely new caliber for the JCG, and it gives this class increased firepower compared with usual 1,000 ton-class patrol vessels which normally have only one manually controlled 20 mm Vulcan Gatling gun . This 30 mm gun system is more powerful than a 20 mm Vulcan with a Remote Firing System (RFS) associated with the simplified laser-optical fire-control system (FCS) which is on board recent PMs and PSs such as the Tsurugi class , and more reasonable than the larger Bofors 40 mm L/70 gun with laser-optical FCS which is mounted on board "High-speed, High-functionality" PLs such as the Hida and Aso classes .
The Shiretoko class is the older 1,000 ton-class PLs, twenty-eight ships were built in late 1970s and early 1980s. It was announced that Japan plans to transfer two of the older Shiretoko -class type patrol vessels to the Philippines Coast Guard in 2012.
Reference text from Wikipedia contributors, used under CC BY-SA 4.0.
Hateruma-class patrol vessel equipment records. Variants, orders and quantities are shown as reported in each inventory source; coverage is incomplete.
JapanCoast Guard exact named equipment holdings: Hateruma. Active, operational-reserve and training units excluding equipment in store; November 2025 IISS assessment. Named service only; no parent-force or national total inferred. Source role: PATROL AND COASTAL COMBATANTS / PSO. Original estimates, ranges, reporting names, reserve, lease and employment scopes retained; nested included counts are not added. Missile-system quantities mean launchers, not rounds. No readiness, crew, carried weapon, payload, factory-production or future order count inherited.