V- hulls

[eupa]

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

[Louise]

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!

[codprawn]

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.

[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

[Richard B]

"Deep" - over 20° I think!

[Louise]

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.

[Colin F]

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.