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Originally Posted by Rockin Robbins
Ewwwwww! That's some kind of oversimplification because the trim ballast system and negative tank have to have some water in them. The boat would have to have a fair amount of reserve buoyancy with the main ballast tanks full or it couldn't carry any cargo or people. Once a tank is empty, you can't make it any lighter.
I think the statement is probably correct with full MBTs and a default amount of water in the trim and neutral buoyancy systems. Davey? What's your take?
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I should know better than to 'dance' with you again RR ..... lol - however I didn't want to quote the entire page. They go into greater detail on the website. The weight of the boat would of course include 'cargo & people'
http://www.fleetsubmarine.com/dynamics.html is also helpful.
Happy Hunting!
Art