Sailing Jibsea · video

What this video covers

To test for stray current and galvanic corrosion, the crew of the aluminum sailboat Jibsea uses a silver-silver chloride electrode connected to a voltmeter.13:42 By measuring millivolt readings at the hull and comparing them against manufacturer specifications, they verify that their vessel remains within the protected range of -950 to -1100 millivolts.15:29 The testing procedure involves shutting off all AC and DC power, then systematically activating individual breakers while monitoring for rapid shifts exceeding 10 millivolts, which would indicate electrical leakage.17:56 After confirming their system is isolated, the crew concludes that previous rust on their anchor chain likely resulted from localized galvanic corrosion rather than systemic stray current.19:28 While anchored in Carlisle Bay, Antigua, they also use a Nomad electric dive compressor to scrub the hull, noting that their copper-free Aluma Paint by Total Boat has performed well after four months of use.22:48 Regular testing with a silver-silver chloride electrode provides a reliable method for monitoring hull protection and identifying electrical faults.

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