The submarine’s greatest weapon is its stealth. By operating unseen beneath the waves, a modern submarine can position itself for a devastating surprise attack with torpedoes and anti-ship missiles, often before a surface ship is even aware of the danger.And yet, modern destroyers are far from helpless prey; they are, in fact, premier submarine hunters. These advanced surface warships are equipped with a sophisticated suite of sensors, including powerful hull-mounted and towed sonar arrays, designed to detect the faint sounds of an approaching submarine.