The ships are armed with two 6-tubed anti-submarine mortar launchers. The earlier boats are fitted with two manually operated twin-barrel 37 mm guns, but they have been replaced by two automatic 37 mm guns on the later variants.
The ships are outfitted with two 6-tube anti-submarine mortar systems. Earlier boats had two manual twin 37 mm cannons, which were replaced by two automated 37 mm cannons in later models.