Sailing Zephyr IV · video

What this video covers

Dave installs a Sonihull SH Duo ultrasonic antifouling system on his 34-ft sailboat, Zephyr IV, to reduce reliance on traditional bottom paint.0:17 The installation requires mounting two transducers—one forward and one aft—directly to the interior of the hull using epoxy and aluminum mounting discs.0:32 He abrades the fiberglass surface to ensure a secure bond for the mounting rings, allowing six hours for the epoxy to cure before attaching the transducers.1:03 The control unit mounts under the chart table, wired to both the 240-volt AC shore power switchboard and the 12-volt house battery bank.4:11 He installs an inline 5-amp fuse on the DC circuit to prevent battery depletion.7:53 After completing the wiring, he confirms the system operates without interfering with the existing log or echo sounder instruments.8:07 The effectiveness of the ultrasonic transducers remains unverified until the next scheduled haul-out.8:24

Boats in this video

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