Chamsuri-class patrol boat

Chamsuri class patrol vessels are naval boats that function as patrol craft. These entered service with the South Korean navy (South Korea) in the 70s, and have since seen service with three other navies, of which the Philippine Navy is currently the largest non-South Korean user.

These boats were built by the Hanjin Industrial SB, Chinhae, and Korea SB & Eng. Masan shipyards.

These boats, also referred to as "PKM", were built in two batches: the 201 series, and the more heavily armed 301 series. Early PKM 201 series boats were initially armed with 1 40-mm Bofors 60-cal Mk.3; 1 twin 30-mm 75-cal Emerlec EX-30; 2 single 20-mm 70-cal. Mk. 10 AA. Late PKM 201 boats were armed with 1 twin 30mm 75-cal Emerlec EX-30 AA; 1 or 2 single 20-mm Vulcan gatling AA; 2 single 12.7-mm machine guns. The PKM 301 boats were armed with one 40mm 60-cal Bofors AA in a fully enclosed mount; 2 single 20-mm Vulcan gatling AA; 2 single 12.7mm machine guns.

As newer, more capable patrol crafts enter South Korean navy service, the Chamsuri class boats are slowly being retired.

Users

 * 🇧🇩 Bangladesh - Titas Class
 * East Timor - Three examples, sub-class unknown
 * 🇬🇭 Ghana - Stephen Otu Class
 * 🇰🇿 Kazakhstan - 031 Class
 * 🇵🇭 Philippines - Tomas Batillo class
 * 🇰🇷 South Korea - Chamsuri class

In Bangladeshi service
The Bangladesh Navy operates 4 PKMs. The first two (P1011 and P1012) were transferred from South Korea in 2000. Another two (P1013 & P1014) entered service in 2004.
 * P1011 Titas (ex-PKM-2??)
 * P1012 Kusiyara (ex-PKM-2??)
 * P1013 Chitra (ex-PKM-2??)
 * P1014 Dhansiri (ex-PKM-2??)

In Timorese service
One naval and two coast guard units were transferred by South Korea to the Naval Component of East Timor's F-FDTL in September 2011, apparently on the basis of a transfer agreement signed in Seoul the previous month. They have been rechristened Kamenassa, Dili and Hera, respectively. Sub-class and original pennant numbers are currently unknown.
 * P1?? Kamenassa
 * P1?? Dili
 * P1?? Hera

In Ghanaian service
One vessel transferred in 2011.
 * P33 (ex PKM 237)

In Kazakh service
Kazakhstan received 3 PKMs in 2006. These were purchased for a token amount of $100 per ship.
 * RK-031 (ex-PKM-2??)
 * RK-032 (ex-PKM-2??)
 * RK-033 (ex-PKM-233)

In Philippine service
At least 8 PKMs were transferred to the Philippines. The first 5, PKM 225, 226, 229, 231, and 235, were transferred in 1995. Four were commissioned the following year, with 1 (ex-PKM 235) used as cannibalization spares. Another unit was transferred in 1998. An additional two ships, PKM 223 and PKM 232, were acquired in 2006.

PKMs in Philippine Navy service are collectively referred to as the Tomas Batillo class, named after Filipino officers & soldiers who served with distinction during the Korean War. These are listed below :


 * PG-110 BRP Tomas Batillo (ex-PKM 225)
 * PG-111 BRP Boni Serrano (ex-PKM 226)
 * PG-112 BRP Bienvenido Salting (ex-PKM 229)
 * PG-114 BRP Salvador Abcede (ex-PKM 231)
 * PG-115 BRP Ramon Aguirre (ex-PKM 235)
 * PG-116 BRP Nicolas Mahusay
 * PG-117 BRP Dionisio Ojeda (ex-PKM 232)
 * PG-118 BRP Emilio Liwanag (ex-PKM 223)