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Old 08-01-2012, 06:22 PM   #2
Woodsong
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City: Atlanta
Vessel Model: Bayliner 4550 Pilothouse
Join Date: Oct 2007
Posts: 1,630
Coring, whether it be cored hull or cored decks refers to the construction technique of sandwiching lightweight but strong materials in between layers of fiberglass. Many, many, many boats, i.e. almost all boats, have cored topsides either in the form of cored decks, cored cabin super structure, etc. Some have coring below the water line, some don't. There are multiple materials used for coring with the most common material being balsa. It is strong, durable and lightweight as long as it is not exposed to water and then it turns to mush. Modern coring utilizes synthetic materials that do not obsorb water and don't rot. The typical compromise is no coring below the waterline but then use coring on decks, etc. to save weight. Coring is not a bad thing as long as it is appropriately utilized and protected from water intrusion.
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