Ojika-class patrol vessel

The Ojika-class patrol vessel is a class of PL type patrol vessels of the Japan Coast Guard. ^{[2][3][Note 1]}

Yahiko (PL-04)
Class overview
Name	Ojika-class patrol vessel
Operators	Japan Coast Guard  Malaysian Maritime Enforcement Agency
Preceded by	Nojima
Succeeded by	Aso class
Built	1990–2000
In commission	1991–
Completed	7
Active	7
Retired	1 (in Japanese service)
General characteristics
Type	1,000 ton-class PL[Note 1]
Tonnage	1,269 GT[2]
Displacement	normal: 1,883 tons[3] full load: 2,006 tons[4]
Length	91.5 m (300 ft 2 in)[2]
Beam	11.0 m (36 ft 1 in)[2]
Draught	3.5 m (11 ft 6 in)[3]
Depth	6.4 m (21 ft 0 in)[2]
Propulsion	2 × shafts[2] 2 × diesel engines[2] (7,000 ps/5,148kW)
Speed	20.0 knots (37.0 km/h; 23.0 mph)[2]
Range	3,000 nmi (5,600 km; 3,500 mi)[2]
Boats & landing craft carried	2 × 7-meter type high-speed launch 2 × rigid inflatable boats
Complement	34[2]
Sensors & processing systems	JMA-1596 navigation radar[2]
Armament	1 × KDC 35 mm gun 1 × JM61-M 20 mm gun

Design

The design of this class is generally a modified version of Nojima (PL-01), a preceding 1,000-ton class PL being emphasis on air-sea rescue operations.^[5]

In contrast to the Nojima, which had a helicopter deck one level higher than the strength deck, this class utilizes the end of the strength deck as the helicopter deck, and has a reinforced structure to land a large Super Puma helicopter. In addition, a well dock was installed below the helicopter deck to accommodate a high speed launch,^[5] but it was not efficient as planned and discontinued after the second ship.^[6]

The chimney was split into two and placed on both sides of the ship. Between these funnels, a hangar for the ROV and a preparation room for diving operations were set up.^[6] With these capabilities to support divers, all ships of this class are officially certified as Patrol Vessel with Enhanced Rescue Capability (救難強化巡視船, Kyūnan-kyōka-junshisen).^[2]

Ships in the class

Hull no.	Ship name	Builder	Commission	Decommission	Fate
PL-02	Erimo (former Ojika)	Mitsui Engineering & Shipbuilding	31 October 1991	24 January 2017	Transferred to Malaysian Coast Guard as KM Pekan[7][8]
PL-03	Kudaka	Hakodate Dock	25 October 1994
PL-04	Yahiko (former Satsuma)	Sumitomo Heavy Industries	26 October 1995
PL-05	Dejima (former Hakata)	Ishikawajima-Harima Heavy Industries	26 November 1998
PL-06	Kurikoma (former Dejima)	Mitsui Engineering & Shipbuilding	29 October 1999
PL-07	Satsuma	Kawasaki Heavy Industries
PL-08	Tosa (former Motobu)	Sasebo Heavy Industries [ja]	31 October 2000

Notes

1. The hull classification symbol "PL" stands for "Patrol Vessel, Large".^[1]