Quote:
Originally Posted by a64pilot
Stupid question, I always hear don’t over zinc your boat.
But don’t we all when we put our oversized zinc plated anchors and all zinc coated rode in the water?
Pretty sure seeing as how my windlass is grounded that there is an electrical connection.
So why isn’t this over zinc to an extreme?
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The devil is
always in the detail.
Using zinc anodes is just one part of providing galvanic protection to the underwater metal (and wood) aspects of a boat.
Before considering if you are over zincing your boat, you have to know the what and why of using zinc anodic protection. There are quite different requirements for a
steel hull, a
wood hull and underwater metal fittings on a FRG
hull (and if such are bonded or not). Only then can one consider is they are "over zinced".
I would not be concerned about the zinc on the chain or
anchor, it will be busy protecting it's parent metal. The electrical circuit between say your bonded through hulls (or prop etc) and the buried anchor is a long one. Put in better electrical terms, the resistance between the various components of the electrical cell is quite high. While the analogy is not a great one, think of a say a incandescent light bulb connected to a near flat battery by very long thin wires.
Charging the battery a bit won't increase the light output by much.