Complex sentence: The problem of the weak anti-aircraft weaponry was partially solved with two AK-230 turrets, armed with four 30x213 mm guns, in fore and aft deck (as Hegu class, chinese improved and longer Komar, with an additional 25 mm gun).
Split into simpler sentences: The problem of the weak anti-aircraft weaponry was partially solved with two AK-230 turrets, armed with four 30x213 mm guns. One was forward, the other in the aft (like Hegu class, the improved and longer Komar model, with an additional 25 mm gun).