"Peggie Hall" wrote in message
...
Calif Bill wrote:
Water is 64# per cubic foot.
Water is 64# per cubic foot.
How'd you arrive at that? 'Cuz I'm driving myself nuts here trying to
convert lbs/gal (8.333) to lbs/cu.ft. and it's not working.
Out of the past, from engineering school. Salt water is a little heavier.
Fresh maybe 62# and average salt water 64#. Been a long time since I
graduated.
So to support at least 125# and not be
partially submerged, you will need at least 3 cubic feet of milk
cartons.
Don't forget to add the weight of at least 3 rolls of duct tape, which
will another 5 lbs.
So to support at least 125# and not be
partially submerged, you will need at least 3 cubic feet of milk
cartons.
Go some more, and the boat will float higher, and be easier to paddle.
A
rectangle will give the most bouyancy in the smallest area. But, for
style
points, make it pointy in front of the rectangle.
Would a shorter wider "beam" provide more bouancy than a longer narrower
one?
What a fun project!
--
Peggie
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Peggie Hall
Specializing in marine sanitation since 1987
Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and
Other Sources of Aggravation and Odor"
http://www.seaworthy.com/html/get_ri...oat_odors.html
Beam width does not matter. Is how much displacement. Narrow beam would be
tippy. Noah's ark, would have been a box shape. No need for any pointy
end. As it was not powered, just drifted with the winds. And a box gave
the most capacity for size.