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Old 02-09-2018, 11:48 AM   #1
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Cored Hulls

Anyone have experiences to share regarding cored hulls on the ST34/42?

PS. I tried posting another thread but it's not appearing for some reason
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Old 02-09-2018, 01:05 PM   #2
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Virtually all fiberglass boats built today have coring; either balsa, plywood or foam; above the water line. Balsa is the most prevalent core.

Balsa and plywood core can get water inside and rot if the fiberglass layer above it is breached. This is often due to stressed stanchions that break the caulk seal or owner or even boatyard installed deck fittings done without removing and filling the underlying core.

From my limited experience, other than core material, there isn't anything different about how one builder builds them vs another.

David
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Old 02-09-2018, 02:08 PM   #3
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IMO there is no reason, other than being cheap, to core a hull with anything except synthetic material. I wouldn't own a balsa cored bottom. Above the water line is less significant but with the random skills of boat yards and previous owners I am very sceptical.
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Old 03-01-2018, 05:00 PM   #4
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Beneteau 42s are solid fiberglass below the waterline per Marion SC factory
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