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post #15 of Old 09-17-2007
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Sea KINDLINESS is by the design of a boat, etc.

SeaWORTHINESS is due to the inbuilt strength of the boat.
A 'seaworthy' boat is usually built with on-purpose *redundant strength* to handle all conditions possibly encountered. A 'seaworthy' boat, a boat built to take care of itself in ALL conditions possibly encountered on a LONG voyage or ocean passage, will typically be built 5 to 6 times STRONGER than the 'design' loading. This 5 to 6 times 'stronger' than functional design is called 'factor of safety' .... and usually defines a 'blue water' boat. Historical or insurance 'scantlings' show that a boat built at FS=5 FS=6 will be capable of long passages ... without often having them pay a 'loss' claim.

Blue water boats typically have a safety factor built-in at 5X or 6X; (although a 'balls to the wall' racing effort will use/chance less safety factor to save weight, etc.)
a 'coastal design' will have ~3X safety factor;
an 'inshore' design will sometimes only have a safety factor of 2.

Has nothing to do with the 'experience' or 'lack of experience' of the crew; although, an inexperienced crew can easily structurally destroy even a FS=6 boat in no time.

Last edited by RichH; 09-17-2007 at 10:56 AM.
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