Sailing Zephyr IV · video

What this video covers

Dave installs a Seaflo ultrasonic anti-fouling system on a Jeanneau Sun Odyssey 35 named High Spirits, owned by Derek, after a Chinese manufacturer sent a free unit for evaluation.1:54 The system includes a control unit with screw-in waterproof connectors, four epoxy-bonded transducers, four cables, and extension cables.0:44 Derek positions three transducers along the hull's wetted area and mounts the fourth directly on the gearbox to protect the propeller shaft.3:11 Installation required cutting one cable plug to route wiring through the boat's tight interior, then soldering it back on.5:17 Power draw measured approximately 1.4 amps continuous — higher than expected — drawing from a 300 amp-hour battery bank kept charged at the berth.6:09 Derek rates build quality as high: solid transducers, waterproof O-ring cable connections, and a five-amp internal fuse.4:27 The boat had already been in the water 12 months when the system was fitted, so Seaflo's requirement to run from first launch was not met for this cycle.7:45 At haul-out in late April 2026, the hull showed no hanging weed and no barnacles, but carried a thick slime layer that wiped off easily.9:17 Derek considers the bottom slightly cleaner than usual.9:33 The definitive test will follow the next full season with the system running from launch day.10:02

Boats in this video

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