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[4]
Displacement	normal: 1,883 tons[2] full load: 2,006 tons[3]
Length	91.5 m (300 ft 2 in)[4]
Beam	11.0 m (36 ft 1 in)[4]
Draught	3.5 m (11 ft 6 in)[2]
Depth	6.4 m (21 ft 0 in)[4]
Propulsion	2 × shafts[4] 2 × diesel engines[4] (7,000 ps/5,148kW)
Speed	20.0 knots (37.0 km/h; 23.0 mph)[4]
Range	3,000 nmi (5,600 km; 3,500 mi)[4]
Boats & landing craft carried	2 × 7-meter type high-speed launch 2 × rigid inflatable boats
Complement	34[4]
Sensors and processing systems	JMA-1596 navigation radar[4]
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. [4][2][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).[4]

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. Saunders 2009, p. 438.
3. Asanaga & Ōtsuka 1995, p. 161.
4. Kaijin-sha 2020, p. 59.
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