right around 35 tons empty. + 350 gals fuel + 175 gallons water+ 75
gallons waste

That's what I heard about the Queen Mary.

We have a show in the USA called Myth Buster.. Ill submit the question
and see if they can prove it.
I beleive it, Ive pushed a 600+ ton boat myself and made it move. 100
tons is a breeze.

Joe