Chamsuri-class patrol boat

Template:Infobox ship imageTemplate:Infobox ship class overviewTemplate:Infobox ship characteristics

The Chamsuri class (Korean: Template:Category handler) (also known as the "Sea Dolphin" and "Wildcat" types)Template:Sfn are patrol boats originally constructed for and operated by the Republic of Korea Navy. They first entered service in 1979, and they have since seen service with five other navies, of which the Philippine Navy is currently the largest import user. These boats were built by the Korea Tacoma, and Korea SB & Eng. Masan shipyards. In Korea, the Chamsuri-class boats are being retired and replaced by Template:Sclass2s.

Design and description

The Chamsuri class were designed in the 1970s as the basis for South Korea's coastal defense against North Korean amphibious incursions.Template:Sfn The Chamsuri class comes in two designs with differing armament. The PKM 201 subclass ("PKM" stands for "patrol killer medium") mounted lighter armament than the PKM 301 subclass. The subclasses were also known as the "Sea Dolphin" and "Wildcat" types respectively.Template:Sfn The ships measure Template:Convert long overall and Template:Cvt at the waterline with a beam of Template:Cvt and a draft of Template:Cvt and Template:Cvt at the propellers. The Chamsuris have a light displacement of Template:Convert and Template:Cvt at full load. The ships have a complement of 31 including 5 officers.Template:Sfn

The patrol boats are powered by two MTU 16V MD538 TU90 diesel engines turning two propellers creating Template:Convert or Template:Cvt sustained. The ships have two 50 kW diesel generator sets for electricity production.Template:Sfn The Chamsuris were designed for a maximum speed of Template:Convert but can sustain a speed of Template:Convert.Template:Sfn The ships have a range of Template:Convert at 32 knots or Template:Cvt at Template:Convert. The patrol boats carry Template:Convert of fuel.Template:Sfn

In Korean service, the early PKM 201 series ships were armed with a single Bofors [[Bofors 40 mm Automatic Gun L/60|Template:Convert/L60 Mk3 gun]], a pair of Template:Cvt/75 Emerlac anti-aircraft (AA) EX 30 guns situated in a single mount and two single-mounted Oerlikon 20mm L/70 Mk10 AA guns.Template:SfnTemplate:Sfn Later PKM 201-class vessels mounted the twin 30 mm/75 Emerlac EX 30 guns and one or two single-mounted Sea Vulcan Template:Cvt Gatling guns and two single-mounted Template:Cvt M2 Browning machine guns.Template:Sfn The PKM 301 subclass were equipped with the Bofors 40 mm/L60 gun, the two single-mounted Sea Vulcans and the single-mounted 12.7 mm machine guns.Template:SfnTemplate:Efn

On the PKM 301 class, the ships' had their 40 mm mount enclosed and situated on the forecastle and one Vulcan mount atop the superstructure and the other located on the fantail. The enclosures were Mauser glass-reinforced plastic shields. Ships of the PKM 201 series had their power-operated twin 30 mm mount located on the forecastle and some of the older units had their 40 mm mount situated on the fantail. The vessels were equipped with Raytheon 1645 navigational/surface search radar.Template:Sfn

Korean service

File:PKM 357 at the War Memorial of Korea, 23 March 2011.jpg

PKM 357 at the War Memorial of Korea

54 vessels of the "Sea Dolphin" type and 47 vessels of the "Wildcat" type were constructed for the Republic of Korea Navy (ROKN). They were constructed at the shipyards Korea SB (later known as Hanjin Heavy Industries and HJ Shipbuilding) and Korea Tacoma.Template:Sfn The first entered service in 1971–1972.Template:Sfn By 2013, there were only 74 craft in service with the ROKN.Template:Sfn In 2002, a Chamsuri-class patrol boat, PKM 357 was sunk during the Battle of Yeongpyeong versus North Korean forces.Template:Sfn A reproduction of the vessel was created and turned into a museum ship at the War Memorial of Korea. The Chamsuris are being replaced in Korean service by the Template:Sclass (also known as the PKG class or Gumdoksuri class).Template:Sfn

Export

The designers of the class, Daewoo, initially offered an export version, called the Dangpo class, but there were no buyers. The design called for a ship Template:Cvt at full load with a length overall of Template:Cvt, capable of making Template:Convert with a range of Template:Cvt at Template:Convert.Template:Sfn

In Bangladeshi service

The Bangladesh Navy operated four Chamsuris. The first two (P1011 and P1012) were acquired in April 2000 and formally transferred from South Korea on 27 May 2000.Template:SfnTemplate:Sfn The second pair (P1013 and P1014) entered service on 3 October 2004.Template:Sfn All four are "Sea Dolphin"/PKM 201 type. They were transferred to the Bangladesh Coast Guard for service.Template:Sfn

Bangladeshi Chamsuri class construction dataTemplate:SfnTemplate:Sfn
Pennant number	Name	Acquired	Commissioned	Status
P1011	Titas	April 2000	27 May 2000	In service
P1012	Kusiyara			In service
P1013	Chitra	2004	3 October 2004	In service
P1014	Dhansiri			In service

In Timorese service

A Chamsuri-class ship was one of three patrol vessels transferred by South Korea to the Naval Component of East Timor's F-FDTL in September 2011, on the basis of a transfer agreement signed in Seoul the previous month. The vessel, re-christened Kamenassa, was of the "Sea Dolphin"/PKM 201 type.Template:Sfn

Timor-Leste Chamsuri class construction dataTemplate:Sfn
Pennant number	Name	Acquired	Commissioned	Status
P217		August 2011	26 September 2011	Sunk as a dive wreck 15 July 2023

In Ghanaian service

One vessel was transferred in 2011.Template:Sfn

Ghanaian Chamsuri class construction dataTemplate:Sfn
Pennant number	Name	Acquired	Commissioned	Status
P33	(ex-PKM 237)	2010	21 January 2011	In service

In Kazakh service

Kazakhstan announced the transfer of three Chamsuri-class vessels in April 2005. The three ships were received on 27 March 2006.Template:Sfn They were purchased for a token amount of $100 per ship. As part of the agreement, all armament was removed along with the identification friend or foe system.Template:Sfn

Kazakh Chamsuri class construction dataTemplate:Sfn
Pennant number	Name	Acquired	Commissioned	Status
RK-031	Shapshan	April 2005	27 March 2006
RK-032	Batyr
RK-033	Ozhet (ex-PKM 233)

In Philippine service

File:US Navy 090906-N-0120R-068 A Philippine Navy patrol boat and an 11-meter rigid hull inflatable boat operated by members of Joint Special Operations Task Force-Philippines (JSOTF-P) search for survivors Sept. 6, 2009.jpg

BRP Dioniso Ojeda of the Philippine Navy

At least eight Chamsuris were transferred to the Philippines. The first five, PKM 225, PKM 226, PKM 229, PKM 231, and PKM 235, were transferred in 1995. Four were commissioned the following year, with one (ex-PKM 235) cannibalized for spare parts. Another unit was transferred in 1998. An additional two ships, PKM 223 and PKM 232, were acquired in 2006.

Chamsuris in Philippine Navy service are collectively referred to as the Template:Sclass, named after Filipino officers and soldiers who served with distinction during the Korean War. As of 1 March 2021, all ships of the class have been withdrawn from active service in the Philippine Navy.

In Nigerian service

A single Chamsuri-class patrol boat was gifted to the Nigerian Navy, renamed NNS Ikogosi in Nigerian service and commissioned on 31 May 2025.

Nigerian Chamsuri class construction data
Pennant number	Name	Acquired	Commissioned	Status
P165	Ikogosi	2025	31 May 2025	In service

References

• }

External links

• Chamsuri Patrol Vessel image (description in Korean)
• Republic of Korea's Navy: Western Sea Engagement