Underwater sensors provided is the ASO 94-41 hull mounted active search and attack sonar supplied by Atlas Elektronik.

The missiles are armed with a 210 kg (460 lb) high-explosive warhead, fitted with impact and proximity fuses.

The Albatros system fires the Mach 2.5 Aspide missile over a 15 km (9.3 mi) range to deliver a 33 kg (73 lb) warhead.

The Laksamanas are also armed with two triple Whitehead Alenia ILAS-3 torpedo launchers installed one each side on the main deck, firing the A244/S anti-submarine torpedoes that use the active, passive and mixed mode homing to a target range of 7 km (4.3 mi).

The class is armed with a 76 mm (3 in) 62 calibre Oto Melara Super Rapid gun is installed on the bow deck in front of the citadel.

The ships are also armed with the 40 mm (1.6 in) Oto Melara L70 twin gun in the multi-role mode over a range of 12.5 km (7.8 mi) and firing rate of 300 rounds/minute.

The upgrade includes missile launchers, sensors, combat management system, fire control radar, IFF and chaff.