How can I calculate the tonnage

http://www.youtube.com/watch?v=Ddeo6LwDvpw

 

http://www.youtube.com/watch?v=vYYHqOX9KjI

 

First of all there must be a stability booklet and full displacement calculation
for this size

if not approximate calculation method for having idea

hull dept = 2.65 ?? if this is actual draught of yatch

Lwl X B X T ( length of waterline x Beamwl x Draughtmax ) X 0.4 gives displacement tonnage

app. CB for a yatch = 0.4

 

thank you,
but the depth is not the draft

the body draft is 2.65

 

I do not know why you need the stability booklet to calculate displacement. If there were such a book, we would not need to calculate it.

It seems a little adventure to give that figure for Cb. Overall, for yachts (the number of different types of yachts is huge), does not have to be correct.

 

Well done at least you know where you can find the correct displacement tonnage information. How did you know that such a book has never existed.
if any yatch or another vessel has been built, this yatch had to get any stabiliy booklet hyd calculations etc ( over 50 m ). it could be find from the port of register easily.

 

Dear Murat124, the title of this thread is "How can I calculate the tonnage?" (See post #1).
If the question were "Where I can read or find the tonnage?", I would say that, indeed, a place that is sure this number is in the stability booklet. The Owner is required to keep one copy of this book and update it if necessary. No need to look at the "port of register". You're welcome.

 

thank you,
here is a rig ,another amateur effort

http://www.boatdesign.net/gallery/showphoto.php?photo=23339

 

Sorry Peter but without a body plane (lines plane) will not be possible to calculate the displacements at various drafts.
Maybe you can deduce something compared to similar boats.

 

http://www.boatdesign.net/forums/boat-design/how-can-i-calculate-tonnage-48005-2.html

 

TANSL i have a lines plan

 

If the plane is in pdf format we can do little. Send me what you have and I´ll see what to do.

 

... And if all else fails, the next time you haul it out, just ask the lift operator. I'm sure he'll be more than happy to tell you exactly how much your boat weighs.

 

But be careful because if he charges by weight lifted, he'll have a tendency to give more weight than the actual.

 

Here, it's a flat fee (which is a good thing, cause mine tips the scale at 40 tons...).