Re: [PSUBS-MAILIST] sub bouyancy

[HeyCLOWNeY@aol.com]

thanks for the help carsten,  thats a seriuos sub your building,but the shop 
your using there makes my mouth water just as much as the sub your building! 
i dont have any machine shop facilitys here,,just migwelders and the usual 
home owner tools,,well mabee a tad more then the normal home owner!! ohh ya 
bye the way i saw a picture of a small sub that i remebered seeing in 
sanfransico that was using pvc pipe for its soft ballast tanks,,since they 
are always at ambiant pressure would pvc be a cost cutting soft tank or would 
it be better to acess the weight one would get from using steel?