 It continues executing this search until it either finds a target or exhausts its six-minute endurance.The guidance system could drive the active sonar at either a slow rate or a fast rate, which it used when the target drew near to obtain a precise proximity and rate of closure.The air dropped version of the torpedo is fitted with a parachute retarding system to slow entry into the water, and the nose is protected from the impact by a fairing which is immediately discarded upon entering the water.