Fatahillah-class

The Fatahillah class consists of three corvettes operated by the Indonesian Navy. Developed to succeed the Albatros class, the vessels were constructed by Wilton-Fijenoord in Schiedam, Netherlands. The class was subsequently succeeded in Indonesian service by the Diponegoro class.

The ships utilize a combined diesel or gas (CODOG) propulsion system driving two shafts. The baseline design includes air and surface surveillance radars, tracking radars, and sonar. The ships are equipped for multi-role operations, carrying a primary deck gun, secondary autocannons, anti-submarine rockets, and torpedo launchers. For surface engagements, the class was built with anti-ship missile launchers, though these were removed in the early 2000s due to obsolescence. The third vessel, KRI Nala, features a different configuration than its sister ships, incorporating a flight deck and telescopic hangar for helicopter operations. This variant lacks torpedo launchers but carries additional secondary gun armament.

The class has undergone periodic modernization of its electronic suites and countermeasure systems. Initial sensors were replaced or supplemented with updated chaff launchers, fire-control systems, and electronic countermeasure suites. Mid-life upgrades were completed for KRI Fatahillah in 2016 and KRI Malahayati in 2020. These refits included the installation of Terma SCANTER surveillance radars and updated Identification Friend or Foe (IFF) systems.

All three vessels remain in active service. In January 2007, KRI Fatahillah and KRI Nala were deployed to search for the wreckage of Adam Air Flight 574. During this operation, KRI Fatahillah located several unidentified metal objects on the seabed. In November 2022, KRI Fatahillah and KRI Malahayati were assigned to the maritime security detail for the G20 Bali summit, patrolling the waters off Nusa Dua.