how to weigh a boat - SailNet Community
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how to weigh a boat

I need to figure out how to weigh a wooden boat. It is under a shed and will go on the trailer shortly. I can not take it to a set of scales to weigh it before it goes into the water. Does anyone know of a way to weigh the boat, on or off the trailer.

Last edited by c_bland; 08-25-2012 at 12:02 PM.
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Old 08-25-2012
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Re: how to weigh a boat

If you can calculate the volume of water it displaces at normal waterline the weight of that volume of water would equal the weight of the boat.. but you'd need accurate line drawings and a yacht designer's formulae (or program) to come up with that number.

No chance it's a recognized design for which there may be some approximate data already??

Ron

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Re: how to weigh a boat

I wish it was that easy. This is a custom designed wooden boat. We know what the LWL will be but we are trying to find out what the boat would weigh empty for transport purposes, etc.
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Re: how to weigh a boat

If you describe it more fully someone may have an idea.. also if you know the designer that would help too. So give us the length, beam, style of hull etc. At this point we don't know if you're thinking a Tbird or a wooden Spray......

Ron

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Re: how to weigh a boat

Go to a truck weigh station or a scrapyard, with your trailer. Weigh it, with or without your tow vehicle.

Go home, come back with the boat on the trailer. Weigh again and subject the trailer weight. Remember to adjust for any gas you've used, about 7-1/2# per gallon.

Or find a boatyard with a crane or travellift that has a scale in it, many do. Slingboat, hoist, read scale.
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Re: how to weigh a boat

I think that we have located two articles that may help..at least we are going to try them both to see if the numbers come out the same (or at least close).
I only wish that we were close to a boatyard ! We are 'inland' too much and there is no place to carry her to have her weighed (at least that is nearby).
Going out to give the articles a try...wish us luck!
If anyone else has any ideas, I'd love to read about them! Many thanks.
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Old 08-25-2012
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Re: how to weigh a boat

Like Hellosailor said, you should have a scrapyard, or maybe a sand/gravel/cement business near you, even recycling places have drive on scales. Do the trailer, then the trailer with boat? Heck, I'm over an hour from the ocean and I can think of at least 3 places near me.
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Re: how to weigh a boat

if you are near a dragstrip or have friends who travel in that sport or....you are in a small town where LLEO are willing to work with you...they (either or both) may have portable scales that you can weigh the boat in place, as long as you can lift it and place it or a support on the scale.

Not sure how important it is to get the number, but you could buy a set from summit racing...

best of luck
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Old 08-25-2012
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Re: how to weigh a boat

I believe the OP was wanting to know the weight so they could safely haul the boat. Size of transport vehicle, tire ratings, brake requirements etc. That's why they didn't want to transport it to a scale.
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Re: how to weigh a boat

Thanks to one of the articles, we now know how much the trailer weighs, even if all the re-inforcements, etc. Now to get the boat loaded onto the trailer and on to the next steps.
I'll keep you up-dated and will give a link to the articles at a later time. I had to weed through a lot of stuff out there on the internet to come up with the two articles.
Off to loading we go...this is going to take a while so you may not hear back from me for a while! Thanks everyone!
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