Indonesia to Arm KRI GOLOK Trimaran FAC with Atmaca Missiles

At the Indo Defence 2025 exhibition in Jakarta, PT Lundin (also known as North Sea Boats) showcased its 62-meter trimaran fast attack craft, which is now expected to be outfitted with Turkish-made naval systems.

The vessel, launched in 2021, was commissioned by the Indonesian Navy in 2022. However, it currently operates without combat systems, and the outfitting process will proceed based on the Navy’s available budget.

While the initial plan was to arm the vessel with the Norwegian-made Naval Strike Missile (NSM), company officials told Naval News that it will instead be equipped with the Turkish-made Atmaca anti-ship missile developed by Roketsan. This change reflects a shift in the armament configuration, aligning with the broader integration of Turkish systems across the platform.

The ship will be also be fitted with two Aselsan-made 12.7mm remote weapon stations, likely from the STAMP series. Aselsan will also provide the fire control and electronic support systems, though the specific models have not been disclosed. Most of the navigational systems are expected to be supplied by Aselsan as well. All systems will be integrated to the HAVELSAN ADVENT combat management system.

According to the company the trimaran FAC features a “wave-piercing” hull design that allows it to cut through waves rather than ride over them, improving seakeeping and reducing motion. Its wide beam contributes to inherent stability, minimizing pitching and rolling, which supports more effective operation of onboard weapon systems even in rough sea conditions. According to the builder, this design enables the vessel to maintain higher average speeds in adverse weather with increased comfort and operational safety.

Stealth characteristics have also been incorporated into the vessel’s structure. The design reduces radar, infrared, acoustic, and magnetic signatures. The hull lacks reverse-angle bow overhangs commonly found on traditional designs, which can reflect radar energy. Key systems including weapons and the vessel’s 11-meter high-speed RIB are either concealed or shaped to blend into the superstructure. The wide deck area also allows for helicopter operations.

The vessel is intended for a variety of roles including EEZ patrol, anti-piracy, surveillance, and search and rescue. It is built using carbon fiber foam sandwich construction with resin-infused, osmosis- and fire-resistant vinyl ester resin. With a displacement of 230 tons, the ship has a draft of 1.2 meters, a top speed of 30 knots, and a range of 2,000 nautical miles at a cruising speed of 16 knots. Propulsion is provided by four MAN V12 engines (1,800 HP each) coupled with four MJP 550 waterjets. The platform supports a crew of 30.

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