Products [breadcrumbs_single_product] Opps!! You didn’t choose any image for magnifying action SONIHILL SYSTEM VARIETIES Sonihull Mono Sonihull Duo Sonihull8 SONIHULL The Sonihull ultrasonic antifouling system by NRG Marine uses the latest digital electronics and ultrasonic transducer technology. This system works by producing bursts of ultrasonic energy in multiple frequencies, the energy creates a pattern of […]