On My Way, I did not have trim tabs and had the
shaft zincs and one large disk zinc on the rudder.
Never had any issues. When I first looked at her, the
bronze/nibral prop was in pretty bad shape and
partially eaten away by electrolysis and there were
no zincs onthe shaft and the one on the rudder had
deep holes in it, which is a sign of high levels of
electrolysis, the zincs should wear out evenly with
small dimples, not deep holes as if it was attacked by
a drill bit. Originally she was a fresh water vessel up
the Hudson river and the last owner jsut didnt install
any. The SS shaft was perfect and that previous
owner put a new prop on her, no charge to me.
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