I bought a water meter so I could measure the capacity of the water tank. Result is 2233L to the brim, this will reduce a bit when I put in the overflow so will probably end up about 2000L once that is in. Now you have to trust me on this. I estimated 2000L in my mind.
I will use it next to measure the capacity of the fuel tanks. My guess for them is 450L They are built into the rear of the boat and are a very strange shape so its kinda hard to get a feel for it and seeing inside is not easy either.
I fixed the roof batons in this morning. It was hot work. Its amasing just how much warmer the shell is now the insulation is on and I had the doors open.