Thread: Zincs
View Single Post
Old 11-08-2014, 01:25 PM   #16
boatpoker
Guru
 
City: Here
Join Date: Sep 2012
Posts: 2,940
Capn Kangeroo, I too am a Great Lakes boater (most of the time).

Shaft drive boats have rarely had an issue with galvanic corrosion in the Great Lakes but over the years I have seen more and more (the why is another topic). In recent conversations with Transport Canada inspectors, local ABYC Certidied Marine Electricians and Nick Bailey (DIY Boat Magazine / Bristol Marine) we all agreed that we are seeing more and more galvanic corrosion every year. I have condemned the props on six boats this year due to dezincification.

It has escalated to the point that I am hosting the ABYC 4 day Corrosion Analysis course at Port Credit Yacht Club in March. The course will be presented by Kevin Ritz (the discoverer of "electric shock drowning").

Electric shock drowning and stray current corrosion are closely related issues and you can't study one without the other.

I/O and saildrive corrosion in the Great Lakes is now and has always been a significant problem and every claim I have investigated has been at least in part been due to lack of proper anodes.
boatpoker is offline   Reply With Quote