Formula for CB, CWP for fishing Vessel?

All, help me to find formula of Cb, Cp, CWP, CM %LCB for fishing Vessel...
I mean not this formula Cb = Vol.DIsplacement/L B T, but as stated in Parson Cb = 0,7 + 0,125ATAN......

Parson. Schneekluth didnt give this formula for fishing vessels....

thanks for all

 

no body can help me...

 

I would suggest you purchase from amazon.com the excellent book : "Designing power and Sail by Arthur Edmunds". All the examples and calculations are given. It is worthwhile to buy it.
Bert

 

Hutaru

I think you are looking for formula to give recommended values of Cb, Cwp etc for a fishing boat.

What is the size (length, displacement) and speed of the fishing boat you are designing ?

Then someone can give you some TYPICAL values for a boat of that type.

There is not ONE ONLY correct value of Cb or Cwp for a fishing vessel design. This is especially true because in some parts of the world the length of fishing vessels is artificially constrained by regulations about licences etc. So some boats have very high block coefficient.

But there are TYPICAL ranges which have been found to work in the past. And you can obtain advice on this.