Ojika-class patrol vessel

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

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

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]

References

1. Asanaga & Ōtsuka 1995, p. 16.
2. Kaijin-sha 2020, p. 59.
3. Saunders 2009, p. 438.
4. Asanaga & Ōtsuka 1995, p. 161.
5. Asanaga & Ōtsuka 1995, pp. 131–132.
6. Mayama, Hasegawa & Sugawara 2003, p. 151.
7. Ogilvy, Geryl (25 February 2017). "MMEA plans to set up two radar stations in Sarawak". Toronto Star . Retrieved 25 July 2017.
8. "Malaysian Coast Guard To Be Strengthened With Three Patrol Vessels, Japan's Ex-Ojika-Class Boat". defenseworld.net. 25 January 2017. Retrieved 25 July 2017.

Bibliography

• Asanaga, Youichirou; Ōtsuka, Yukitaka (1995). 海上保安庁 船艇と航空[Maritime Safety Agency - Its Vessels and Aviation] (in Japanese). Seizando-shoten Publishing co., Ltd. ISBN   4-425-77041-2.
• Saunders, Stephen (2009). Jane's Fighting Ships 2009-2010. Jane's Information Group. ISBN   978-0710628886.
• Kaijin-sha, ed. (October 2020). "Patrol Vessels - Ships of Japan Coast Guard". Ships of the World (in Japanese) (933). Kaijin-sha: 39–90. NAID   40022358584.
• Mayama, Yoshihumi; Hasegawa, Hitoshi; Sugawara, Seisuke (July 2003). "All Ships of Japan Coast Guard 1948-2003". Ships of the World (in Japanese) (613). Kaijin-sha: 21–191. NAID   40005855317.

External links

• Media related to Ojika class patrol vessel at Wikimedia Commons