Quote:
Originally Posted by snowman
Is there really a difference in the ride between a 20 and 21 degree deadrise? Most of the deck boats I'm looking at have a 20 degree deadrise, but one has 21.
Thanks again for all the advice.
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If they both weighed the same and had the same exact hull design other than deadrise, Id' think you could notice a difference. However, a 5000 lb boat with 20 degrees of deadrise will very likely ride as well or better than a 4000 lb boat with 24 degrees of deadrise, mass has a lot to do with comfort in rough seas. Also, deadrise is measured at the transom and much of the ride quality of a planing-hull boat is a function of shape of the bow, so you can't just go by deadrise and weight either. Everything else being equal, a boat with a fine bow entry will ride smoother than a boat with a broad and buoyant bow. This is why toons ride decent in chop (and why deck boats typically pound in chop...). One other thing, longer/skinnier boats ride better in chop than shorter/wider boats.
The perfect boat for a sea-kindly ride would be really long, not very wide, and have a very fine entry that pierces waves rather than ride up them. It would also be very efficient, but it would lack usable passenger space. Think about just how opposite that is from a deck boat.