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Old 26 May 2005, 08:57   #1
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V- hulls

Can somebody out there please explain to me what is ment by "deep V"
hull design as distinct from ??? and how it manages to improve wave riding??

jonathan
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Old 26 May 2005, 09:22   #2
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Jonathan, the deadrise of the hull is what determines how deep the vee is. For an explanation of this, have a look at this thread. As I understand it, the deeper the vee, the better the hull will cut through the waves as distinct from banging up and down on top of them. A bit of a rough and ready explanation but I'm sure someone will come along in a minute and explain it in more scientific terms!

Edit: I believe a deep vee is better for rougher water, whereas a shallower/flatter vee will generally make for a faster hull in good conditions. As with all things boaty, the perfect hull is a compromise!
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Old 26 May 2005, 11:10   #3
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Just think of the landing when you come off a wave - a flat bottom will slam like hell - the deeper the V the more gently you land - just drop a bit of wood into the water edge on or flat.

Of course a deeper V needs a lot more power to go fast - a flat bottom just skims.
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Old 26 May 2005, 11:24   #4
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thanks coders and louise. But what determines a ddep rather than a normal
V= is it an isosolese ( how do you spell that?) triannge ? or are there fixed
dimensions ??

jonathan
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Old 26 May 2005, 12:34   #5
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"Deep" - over 20 I think!
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Old 26 May 2005, 12:35   #6
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Quote:
Originally Posted by eupa
thanks coders and louise. But what determines a ddep rather than a normal
V= is it an isosolese ( how do you spell that?) triannge ? or are there fixed
dimensions ??

jonathan
Well in the thread I linked to, JK reckons a deep vee is anything over 16 degrees, while Colin F reckons it's over 18 degrees so take your pick.

I'm not sure what you mean by 'isoceles triangle'. I know what an isoceles triangle is but not sure how you are relating it to the hull shape.
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Old 26 May 2005, 13:04   #7
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Quote:
Originally Posted by Louise
Well in the thread I linked to, JK reckons a deep vee is anything over 16 degrees, while Colin F reckons it's over 18 degrees so take your pick.
hey, what's 2 degrees between friends.
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