BPS Marine BPS-8 8-Transducer Ultrasonic Antifouling System - 12VDC [BPS-8]BPS 8 8 Transducer Ultrasonic Antifouling System 12VDC The BPS 8 is an eight transducer system that can add antifouling protection to hulls, drives, rudders, stabilizers, and more. This single system can provide ultrasonic antifouling protection for hulls up to 80ft in length or can be combined with additional systems for larger vessels. The BPS 8 is also the perfect solution for vessels under 52' with inboards or sail drives to have one system