The fuel tank is under the quarter berth and both the tanks under the settees are water correct? The tank under my port settee is aluminum and the makers labels says "Marine fuel tank" but I assume it is water? The yard where my boat is stored is being a little less than helpful. While the spring relaunching was already paid for by the current owner, the yard is telling me that there is no space available and as soon as I take title to the boat it has to be launched and moved. I wanted to store it there for a few weeks to give myself a chance to check her over a little more thoroughly. So I have to jump onto a totally unknown boat and move her 40 miles to a more friendly yard. I will have about 24 hours in a transient slip to check her out and get going. Probably no sailing sadly as there won't be time to rig her for sailing. Anyway I just want to be sure there is only the one fuel tank so I don't have to worry about switching valves etc. I will put fuel in the tank, make sure all the sea cocks except the engine cooling water are closed, change the impeller, check the shaft packing and go I guess. hope most everything else works.......