canoe body draft formula

[gimmi87]

Hello everyone I hope someone can help me. I was trying to draw a gaff cutter and I'm finding problems to get the canoe body draft for the midship section. I read the book like skene and larsen but they were not very helpful.
I hope someone can give me the formula.
thanks

[gonzo]

The draft is a function of hull shape and displacement. What is your difficulty?

[daiquiri]

Gonzo is right, it is not clear what kind of problems are you encountering.

Apart that, please let me suggest you to read Carlo Sciarelli's book "Lo Yacht - Origine ed evoluzione del veliero da diporto". You will learn a lots about traditional boats (gaff cutters among them), and will get a grasp of their main dimensions and hull lines.

Cheers

[gimmi87]

in the larsen' s book there is this formula lwl/t=12 for a heavy displacement (t is the canoe body draft) in another book t=(V 35)/(lwl beam Cb) Cb is the block coefficient I have many doubts about which one to use.
daiquiri I' m happy to find an Italian engineer in this forum,I study mechanical engineering and I have a passion for boats I'd like to get some advice if you can,if you want to send me an email

[gonzo]

Those formulas only work when you compare boats of similar type. If you apply them to a skimming dish to compare it to a plank on edge it will not give you a proper result.

[daiquiri]

Originally Posted by gimmi87

I'd like to get some advice if you can,if you want to send me an email

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