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Date Posted: - Wednesday - 07/23/14 - 3:20pm
Author: Gabrielle Dowding
Subject: Pimple blisters below waterline on 1972 Grand Mariner 40

Good day, we have just had our '72 Mariner hauled out.
I am seeing tiny pime blisters over about 40% of her below water
Line area. Our surveyor, Allison Mazon is enroute and
I wondered if any of you have encountered this?
How did you proceed ?
We will post on what we do.
Gabrielle and Michael Dowding

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[> Blisters -- Doug Wilson, - Thursday - 07/24/14 - 8:37am

I had a lot of small blisters on Cactus Tree, none bigger than about a dime.
I ground all the blisters out with a 4" grinder. I had the boat in San Carlos, Sonora, Mexico, and left the boat there for the summer. It's very dry there. Came back in September,(to hurricane Jimena).
The blisters were dry, I filled the blisters with West Systems epoxy and 306 filler,paid the yard to take all the gel coat off, and gave the bottom two coats of Ameron two part epoxy for a barrier .
Bottom paint and done.
Cruised another two years and no more blisters.
I don't think that Mariners are prone to blister, but it did happen to Cactus Tree.

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