Wood Rafts

I have seen episodes of both Survivorman and Man v Wild where they attempt to make a wood raft. In both cases they miss the estimate of # and size of logs to use to float. So just how much is needed. Well it is all a matter of carry weight, and wood weight(your logs). a average guideline would be about 10 to 12 pieces of 12 foot long logs that are 8 inches in diameter to support 600 pounds. Your right thats a lot of logs but wood is 30 to 45 lbs a cubic foot and water is 64 pounds a cubic foot. That could be why we changed watercraft design to boat hull structure instead of logs. Too bad balsa trees don't grow around here.

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SURVIVAL..........it's all in your head

type of wood is important, I do believe that ironwood actually sinks in water, naturally because it is so dense. for more buoyancy, one would most likely want less dense woods

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We only have one Earth, take care of her and she will take care of you. ~ probably someone else