# Weight Estimation for a 24m composite or steel motor yacht with 2 decks.

Discussion in 'Boat Design' started by cagdaskutlu, Dec 24, 2015.

1. Joined: May 2015
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Location: istanbul

I have a project about fast craft (Fn>0.7) . I ve already formed the hull with two deck.other specs:
Loa =23.99 m
Beam(max) = 6.02 m
D = 3.77 m
2 Master Cabins and 4 crew /guest Cabins

I need your helps. I can't find way out.I should estimate Light weight of the ship.I've already calculated some external items' weight I had ,but I couldn't estimate hull weight ,outfitting and etc. weights.PLS HELP

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### gonzoSenior Member

What's difficult about adding all the weights? Make a list of every item and material.

3. Joined: May 2015
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Location: istanbul

that's the point which is diffucult. I listed machinery,generators,bed,sofa,kitchen goods, but I can't do it for others.It will be preminalary design project for my fast-craft lesson.And I have not much time,so its important to show a way for me to out .

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### philSweetSenior Member

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### TANSLSenior Member

To calculate the weight of the hullt I would advise to first estimate the scantlings of the structure, roughly. The surface of each element by its thickness and by specific gravity of the material will help to calculate the weight of each item. And as Gonzo suggests, make a complete list of items to consider.
Knowing the weight of a similar boat can be helpful but should be a boat very, very similar.

Merry Christmas to all.

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