Mandau

The Mandau class, also associated with the Indonesian KCR-PSK designation, was ordered in the mid-1970s and built by Korea Tacoma Marine Industries in South Korea. The design reflected a period when Southeast Asian navies wanted small but fast surface combatants that could patrol wide archipelagic waters and threaten larger ships with anti-ship missiles. Four vessels were delivered around 1979-1980: Mandau, Rencong, Badik and Keris. Their acquisition gave the Indonesian Navy a missile-armed fast attack craft class that was easier to operate in dispersed waters than major surface combatants while still carrying credible strike weapons for coastal and sea-lane defense.

The class is a small missile craft of roughly 54 meters length and about 250-290 tons displacement, using a combined diesel-or-gas arrangement for economical patrol and high-speed dash. The high-speed plant includes an LM2500 gas turbine, while diesels support lower-speed cruising. Published characteristics list a maximum speed around 41 knots, a crew of about forty-plus, surface-search and fire-control sensors, and gun armament built around 57 mm, 40 mm and 20 mm weapons. Its original anti-ship punch came from four MM38 Exocet missiles, although later missile availability and obsolescence affected fit. The design is optimized for short, fast surface engagements rather than sustained blue-water escort work.

In Indonesian service, Mandau-class craft have been suited to archipelagic patrol routes, rapid response and coastal defense tasks. Their speed and missile heritage made them useful for a navy responsible for dispersed island waters, fishing-zone enforcement and regional presence. Public reporting notes that KRI Rencong was lost after a fire in 2018, leaving the remaining boats as aging but still recognizable members of Indonesia's fast attack craft inventory. Their operational relevance today is shaped by age, missile obsolescence and maintenance state, but historically they were important because they gave Indonesia a compact sea-denial tool during a period of expanding regional naval modernization.