Steve, removal of the icebox was not necessary in order to remove the water tank. My icebox was rarely used, and (in my opinion) a huge waste of space, so I ripped out the insulation, gaining about 3 cubic feet of storage space. The plan is to relocate my batteries to the icebox, and use the newly freed space in the engine compartment for living space for the kitty-cats, or maybe a cockpit locker.
Although, the water tank removal is only partly finished, I can see that if one were to remove a section of the floor underneath the table, and the half inch plywood locker floors, the tank could then be cut into sections and pulled through the lockers. The big job is grinding the tank. I used up the one cut-off wheel I had in about 20 minutes. Cheap blade I guess. If my tank were aluminum I think it would go much faster. I wonder if the original owner had "special ordered" stainless?
All in all, excluding the time spent working on the icebox demolition, I estimate the entire water tank removal could be done between breakfast and lunch :-)
Of course, now I have to design and fabricate a system which will hold a bunch of 2 1/2 gal water tanks, and three batteries, securely.
Eric