Great looking rig you have there K2WH, I'm guessing it to be a Hatteras vessel with the big H on the side? Looks like in the 56' range, sure make for a great tuna boat as I am sure you know. I was on a newer Feadship vessel a while back that was over the 100' mark and it did have 2 Rolls Royce gas turbine engines as power plants. Fuel capacity was right around 30K and fresh water about 25K. You could go any where in the World in this guy and was like a palace on the waves. Would be a great play toy to have but I stick to renting them, if I ever get the urge to go out in a very nice boat and fish for tuna for a day or 2.