I have tried doing it by working out the area below the water but the figure I get seems unrealistic
2006-12-07 03:49:41 · 9 answers · asked by Boating Dave 1 in Cars & Transportation ➔ Boats & Boating
Joe U has it right..the displacement of a boat, is,BY DEFINITION, the volume under the water line...whether it's made of steel, concrete, wood, glass or granite has nothing to do with it..........it's a tricky measurement, because you have a lot of tapering triangles ....( in 3 dimensions, no less!) to measure but go back and do it again.....there are formulas in N.A. books and programs , but unless you need the weight to the pound careful measurements and multiplication will give you a "close enough" answer
2006-12-08 00:31:10 · answer #1 · answered by yankee_sailor 7 · 0⤊ 0⤋
No. The weight would depend on the material the boat is made from for starters...
You need to consider the difference between mass, weight and density to understand why measuring the area below water doesn't work.
Weight is a force, not a mass. Weight is the effect of gravity on a mass and depends on the strength of the gravitational field as well as the mass.
Density is just mass divided by volume.
When you measure strictly by dimensions you are calculating the mass - in order to get the weight therefore you need to take inot accout the other aspects
2006-12-07 03:59:57 · answer #2 · answered by AC 1 · 0⤊ 1⤋
Not that I know of. If you could determine water displacement you could get a reasonable approximation, but the best way is take it to a dry dock where you could have it weighed.
You could also find the weight on the spec for the boat if you have such a thing.
2006-12-07 03:54:18 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Just find the volume of water that is displaced and use that formula
8.33 lb/gallon
and
1 cubic foot = 7.480519 gallon.
so, find how many cubic feet of water that your boat displaces and multiply that by 7.480519 to get the weight in pounds avoirdupois
2006-12-07 04:02:01 · answer #4 · answered by credo quia est absurdum 7 · 0⤊ 0⤋
I don't think so as any such formula doesn't take into account the material used. Two ships built exactly alike except one is steel and the other is aluminum which will be heavier but according to your formula they would be the same.
2006-12-07 03:54:29 · answer #5 · answered by brian L 6 · 1⤊ 1⤋
There is no formula for working out the weight by the dimensions.
However, you must refer the building or tonnage certificate which may advise you the gross and net tonnage of the boat
2006-12-07 03:51:50 · answer #6 · answered by Wolverine 2 · 0⤊ 1⤋
Not really, aside from any other issues, you cannot quantify the weight of materials used, ie timber, fibreglass, etc. Take it to a weighbridge and let them tell you.
2006-12-07 04:04:11 · answer #7 · answered by Daisy the cow 5 · 0⤊ 1⤋
no
2006-12-07 05:22:37 · answer #8 · answered by Anonymous · 0⤊ 1⤋