Martadinata-class (SIGMA 10514)

The Martadinata class of guided-missile frigates is operated by the Indonesian Navy. Based on the SIGMA 10514 design from the Netherlands-based Damen Schelde Naval Shipbuilding (DSNS), the frigates are built using a modular construction method comprising six sections. PT PAL Indonesia constructed four modules at Surabaya, while DSNS built the remaining two in the Netherlands. The Indonesian Ministry of Defense signed the initial $220 million procurement contract with DSNS on 5 June 2012, which included a technology transfer agreement with PT PAL Indonesia. A contract for a second vessel was signed in February 2013. Indonesia eventually halted the program after the completion of the first two units because DSNS established a branch at Damen Song Cam Shipyard in Vietnam instead of fulfilling investment commitments in Indonesia.

These frigates feature a signature-reduction design to lower radar cross-section, infrared, and noise profiles. Propulsion is provided by a Combined Diesel or Electric (CODOE) system driving two shafts with controllable pitch propellers, powered by two 10,000 kW MCR diesel engines and two 1,300 kW MCR electric motors. The frigates carry a centerline hangar and helicopter deck for one Eurocopter AS565 Panther helicopter, alongside two rigid-hulled inflatable boats. Sensors and combat systems are integrated via the Thales TACTICOS Baseline 2 Combat Management System with ten MOC Mk.4 consoles. The sensor suite includes a Thales SMART-S Mk2 3D air and surface surveillance radar, a Thales STIR 1.2 EO Mk2 fire control system, a Thales UMS 4132 Kingklip hull-mounted active/passive sonar, a Thales Link-Y Mk2 datalink, and a Thales TSB2520 IFF system. Electronic warfare capabilities are provided by a Thales Vigile 100S Mk2 radar electronic support measures system, a Thales Scorpion 2L radar electronic countermeasures system, and a Terma SKWS DL-12T 130 mm 12-tube decoy launcher.

Primary armament consists of one OTO Melara Super Rapid 76 mm main gun, one Rheinmetall Oerlikon Millennium Gun 35 mm close-in weapon system, two Denel Vektor GA-1 20 mm secondary guns, 12 VL MICA-M short-range surface-to-air missiles, and eight Exocet MM40 Block III anti-ship cruise missiles. For anti-submarine warfare, the frigates are equipped with two WASS B515/3 triple-tubed torpedo launchers for WASS A244-S Mod.3 324 mm lightweight torpedoes.

The lead ship, KRI Raden Eddy Martadinata (331), was commissioned on 7 April 2017. PT PAL delivered the second vessel, KRI I Gusti Ngurah Rai (332), on 30 October 2017, and the Indonesian Navy commissioned it on 10 January 2018. Both vessels entered service with several of their weapon and electronic systems fitted-for-but-not-with (FFBNW). These systems—including the VL MICA launchers, Exocet missiles, Millennium CIWS, and electronic warfare suites—were integrated later. KRI Raden Eddy Martadinata received its full complement in December 2019, and KRI I Gusti Ngurah Rai received its systems in March 2020. KRI I Gusti Ngurah Rai subsequently participated in the RIMPAC 2022 naval exercise.