South Korean shipbuilder Hanjin Heavy Industries and Construction (HHIC) has launched three more Patrol Killer Experimental-B (PKX-B)-class fast attack craft for the Republic of Korea Navy (RoKN), the country's Defense Acquisition Program Administration (DAPA) announced on 21 December.
The three new vessels of the class, which is also known as Patrol-boat Killer Medium Rocket (PKMR), entered the water in a ceremony held that same day at HHIC's facilities in Busan.
The patrol vessels, which have been given pennant numbers 212, 213, and 215, respectively, are expected to be delivered to the RoKN by the end of 2019 as part of a contract signed with HHIC in October 2016. The first craft of the class, which was given pennant number 211, was delivered to the navy in October 2017.
The class, which has a full-load displacement of 300 tonnes, has an overall length of 44 m, an overall beam of 7 m, and can accommodate a crew of 20. Powered by General Electric's 6,000 shp LM 500 gas-turbine engines and Caterpillar Marine's Cat C32 diesel engines in a combined diesel and gas turbine (CODAG) configuration, and propelled by waterjets, the platforms have a top speed of 40 kt.
The armament on these vessels includes an aft-mounted, 12-barrelled multiple launch rocket system (MLRS) for 130 mm rockets, a 76 mm naval gun in the primary position, and two remote-controlled 12.7 mm machine guns.
HHIC announced in November that the company has so far been contracted to build 12 of an expected first batch of 16 of these vessels.
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