BoatHowTo · video

Hva denne videoen dekker

Excessive galvanic protection causes cathodic disbondment, which strips bottom paint from bronze through-hulls and triggers delignification in wooden hulls.1:14 Replacing zinc anodes with aluminum anodes often increases the total surface area of the sacrificial metal, leading to overprotection.1:03 Nigel Calder recommends using a silver-silver chloride half-cell to measure the voltage potential of the bonding system.1:59 By hanging the half-cell in the water and connecting it to a multimeter, a boat owner can compare the natural voltage of the protected metal against the anode.1:35 A proper protective shift should measure approximately 200 millivolts above the natural voltage of the metal.3:06 Readings of 400 to 600 millivolts indicate excessive protection.3:34 Reducing the total surface area of the installed anodes, such as using one anode instead of two, corrects the overprotection and prevents damage to surrounding materials.3:50

Mer fra BoatHowTo

Boat ELECTRIC PROPULSION with only LEAD ACID Batteries ?? | Ask The Expert with NIGEL CALDERsep. 2026MaxProp: More Pitch in Reverse than in Forward? 🤔 | Ask The Expert with NIGEL CALDERsep. 2026Common Ground Point with Isolated Saildrives | Ask The Expert with NIGEL CALDERsep. 2026How to keep you TANK CLEAN in the days of BIODIESEL.. | Ask The Expert with NIGEL CALDERaug. 2026

Fra BoatHowTo – se kanalens båt, mannskap og alle analyserte videoer.

The Sailing Directory Newsletter

Én e-post med flåtens beste funn – øyeblikkene, båtene og historiene som er verdt din seertid. Skriv inn din egen adresse for å få din egen kopi.