אנציקלופדיית יאכטות
Bonding system
Bonding systems on yachts: green-wire continuity between underwater metals, survey checks, and FairHelm caution on assuming anodes alone protect.
מה זה
A bonding system is the intentional low-resistance link (often green wire or straps) that ties underwater metals and anodes into one electrical group so cathodic protection can work.
Anchor
Nordic boats with mixed bronze, stainless, and aluminium need clean bonds. FairHelm looks for broken straps at seacocks, painted joints, and add-on thrusters left off the bond network.
FairHelm judgment
FairHelm judgment: a shiny new anode on an orphaned fitting is theatre. Continuity and sensible grouping matter more than anode brand names in the listing.
Limits
We do not publish DIY bonding diagrams as universal law. Wrong bonds can create new corrosion paths. Use a marine electrician familiar with that hull metals set.
שאלות נפוצות
Q: Is bonding the same as AC earthing?
A: Related but not identical. Bonding ties underwater metals. AC earth and isolation need separate attention.
Q: Should every thru-hull be bonded?
A: Many bronze fittings are. Confirm the boat's scheme; do not invent a rule from one yard's habit.
Q: Can corrosion mean the bonding failed?
A: Sometimes. Also wrong alloy, shore faults, or stray current. Survey the whole circuit.