hacking up my yak - Kayak Fishing Adventures on Big Water’s Edge

805gregg · 02-16-2011, 05:27 PM

[QUOTE=dsafety;76126]I am not a naval engineer or anything close but if I remember correctly there is something called "hull speed" that determines the maximum speed that a single hull vessel can reach without coming to a plane. It has something to do with displacement, drag and probably some other factors.

It's waterline length, there is a mathamatical formula, and unless you can plane, you are limited to that speed. It's something about wave formation or something. I do know on my 28' displacement sailboat it's about 6.2 knots, I could put 400 hp and not go faster, it will go 6.2 knots with the 15 hp diesel, I have. And use 1 qt per hr.

02-16-2011, 05:27 PM	#27
805gregg Member Join Date: Aug 2008 Location: Ojai, Ca Posts: 43	[QUOTE=dsafety;76126]I am not a naval engineer or anything close but if I remember correctly there is something called "hull speed" that determines the maximum speed that a single hull vessel can reach without coming to a plane. It has something to do with displacement, drag and probably some other factors. It's waterline length, there is a mathamatical formula, and unless you can plane, you are limited to that speed. It's something about wave formation or something. I do know on my 28' displacement sailboat it's about 6.2 knots, I could put 400 hp and not go faster, it will go 6.2 knots with the 15 hp diesel, I have. And use 1 qt per hr.