Shiretoko-class patrol vessel

The Shiretoko-class patrol vessel (Japanese: しれとこ型巡視船) is a class of PL type patrol vessels of the Japan Coast Guard (JCG; former Maritime Safety Agency, MSA). PL stands for "Patrol vessel Large", and the class name "Shiretoko" is named after Shiretoko, the northeastern area of the island of Hokkaidō, Japan

Shiretoko (PL-101)
Class overview
NameShiretoko class
Operators
Preceded byDaiou class
Succeeded byNojima
Built1978–1982
In commission1978–2016
Completed28
Active0
Retired28
General characteristics
Type1,000 ton-class PL (Patrol vessel, Large)
Tonnage980 GT[1]
Displacement
  • normal: 1,200 tons[1]
  • full load: 1,360 tons[2]
Length78.0 m (255 ft 11 in)[1]
Beam9.60 m (31 ft 6 in)[1]
Draught3.42 m (11 ft 3 in)[1]
Depth5.30 m (17 ft 5 in)[1]
Propulsion
Speed20.0 knots (37.0 km/h; 23.0 mph)[1]
Range4,400 nmi (8,100 km; 5,100 mi)[1]
Boats & landing
craft carried
  • 2 × 7 m class RHIBs
  • 2 × 4.8 m class RHIB
Complement41[1]
Sensors and
processing systems
  • JMA-1576 surface search radar[2]
  • JMA-1596 navigation radar[2]
ArmamentOne JM61-M 20 mm gun or KDC 35 mm gun

Background

In 1977, Act on Territorial Waters and Contiguous Water Area and the Act on Temporary Measures Concerning Fishery Waters was confirmed by the National Diet of Japan to adapt for the UNCLOS III. As a direct result of these acts, the coverage area of the MSA was dramatically extended, so the update of their equipment became an urgent issue. In consequence of these situations, the MSA had put some series of patrol vessels into commission from late 1970s to early 1980s.[3] This class was one of these series, planned to form the main fleet in the high-endurance mission.[4]

Design

This class was designed as the enlarged and mass-production variant of the Daiou class, preceding large patrol vessels. Like the Daiou-class, the hull is ice resistant, but the hull structure has been further strengthened by increasing the thickness of the ice belt and the number of ribs.[4]

As designed, it was to be equipped with one Bofors 40 mm L/60 gun and one Oerlikon 20 mm cannon;[1] latter-batch vessels had their weapon changed to the newer Oerlikon KDC 35 mm gun, and the obsolete 20mm machine gun was dropped. And later, ships of the early-batch had their weapon converted to the JM61-M 20 mm gun.[5]

Ships in the class

Pennant numberShip nameBuilderCommissionDecommission
PL101ShiretokoMitsui Engineering & Shipbuilding8 November 197826 March 2012
PL102EsanSumitomo Heavy Industries16 November 197819 December 2008
PL103Kusakaki (former Wakasa)Kawasaki Heavy Industries21 October 2015
PL104Atsumi (former Yahiko, Shimanto, Kii)Mitsubishi Heavy Industries
PL105Ojika (former Motobu)Sasebo Heavy Industries29 November 197820 October 2000
PL106RishiriShikoku Dockyard12 September 197918 March 2006
PL107MatsushimaTohoku Zosen14 September 19797 February 2009
PL108IwakiNaikai Zosen Corporation10 August 197912 March 2006
PL109ShikineUsuki Shipyard20 September 19794 September 2009
PL110SurugaKurushima Zosen28 September 19795 February 2010
PL111RebunNarasaki Shipbuilding Corporation21 November 197912 December 2008
PL112ChōkaiNipponkai Heavy Industries30 November 197912 March 2008
PL113Nojima (former Ashizuri)Sanoyas Shipyard31 October 197918 March 2006
PL114Tosa (former Oki)Tsuneishi Shipbuilding16 November 197929 January 2009
PL115Yōtei (former Noto)Miho Shipyard30 November 197921 December 2015
PL116YonakuniHayashikane Shipbuilding31 October 19792 February 2005
PL117Suruga (former Daisetsu, Kudaka, Kurikoma, Iwami, Rebun)Hakodate Dock31 January 198020 January 2016
PL118ShimokitaIshikawajima-Harima Heavy Industries12 March 198026 March 2012
PL119SuzukaKanasashi Zosen7 March 19805 February 2010
PL120KunisakiKoyo Dockyard Company29 February 198018 October 2016
PL121Amaki (former Genkai)Oshima Shipbuilding31 January 19805 February 2008
PL122Itoshima (former Gotou, Iwami)Onomichi Dockyard29 February 198021 October 2015
PL123KoshikiKasado Dockyard25 January 19805 February 2010
PL124HaterumaOsaka Shipbuilding12 March 198027 February 2008
PL125KatoriTohoku Zosen17 October 198021 October 2016
PL126Oshika (former Kunigami, Matsushima)Kanda Shipbuilding21 October 198020 January 2016
PL127EtomoNaikai Zosen Corporation17 March 198226 September 2016
PL128Esan (former Masyu, Amagi, Yonakuni)Shikoku Dockyard12 March 1982

References

Bibliography

  • Saunders, Stephen (2009). Jane's Fighting Ships 2009-2010. Jane's Information Group. ISBN 978-0710628886.
  • Japan Coast Guard Foundation [in Japanese] (1990). 海上保安庁船艇航空機整備の歩み [History of vessels and aircraft of Maritime Safety Agency] (in Japanese). Japan Coast Guard Foundation. NCID BA33890789.
  • Nakanomyo, Masami (November 2015). "History of shipboard guns on JCG's patrol vessels". Ships of the World (in Japanese). Kaijin-sha (825): 168–173. NAID 40020597434.

See also

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.