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Thread: 1986 MY Hull Thickness
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03-08-2024 09:56 PM #11Senior Member
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Re: 1986 MY Hull Thickness
1986 54 Hatteras MY IOLANI
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03-08-2024 10:01 PM #12Senior Member
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Re: 1986 MY Hull Thickness
That's pretty stout. I imagine that's a high stress area that requires it.
Interestingly I noticed the other day the handrail gate just outside the pilothouse wouldn't open and close properly. It's as if the whole damn boat had flexed slightly despite being blocked up properly.1986 54 Hatteras MY IOLANI
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03-08-2024 10:33 PM #13
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Re: 1986 MY Hull Thickness
Funny enough, the graving plan included in the owners manual for my boat only shows three points to support her. All three are under bulkheads. Three points for 45'? I guess they knew best but there is a little movement over the winter. I paint contrasting bottom paint color at the graving points to assist the yard crew on where to place the blocks.
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03-09-2024 12:13 PM #15Senior Member
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03-15-2024 01:22 PM #16Senior Member
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Re: 1986 MY Hull Thickness
OK so my through hull valve was located 9-1/2 inches up from the edge of the keel. The old valve used no hardware and was held in place only by the threads of the through hole fitting and some sealant under the flange. It looked like it could be original to the boat but I'm not certain it was old that's for sure. It's used to feed two of the CruiseAir units. The hull thickness measured 1-1/4" there including what appears to be a factory pad area that's slightly built up .(The white stones you see is the parking lot of the marina). I used the new style Groco which uses a separate mounting flange which would allow you to easily change or service the valve in the future. I was really happy with the way the install went I can add some finished photos later. Thanks to all who responded.
IMG_9415 (Large).jpg
Last edited by IOLANI; 03-15-2024 at 01:32 PM.
1986 54 Hatteras MY IOLANI