Silly Plan for Levitating a Deeply Submerged Vessel so as to look at it above water and maybe find something cool. Page 3
12. Calculate an approximation of the mass of the vessel based on its materials, visual size, and models. Back-of-the-envelope. 13. Discern how much water must be displaced to lift that amount of mass. 14. Make or get balloons that big and tie them to the vessel. Use a winch to shorten the ties until they lift the vessel. 15. Scratch that: just use a block-and-tackle winch with a large floating boat.
