A past post thought it might interest some. T&T: Day Tanks / Re : Invader no 1 Something I have liked that came with the boat. Invader has a day tank mounted on the wheel house roof. It is a rectangular box that runs across the roof, holds around 25 imp gallons. The tank is baffled. There are four lines that run off / in to it. One that feeds the tank from the DD return centre on top. Tank is vented and has a fill cap on top as well. Two lines run from each end of the tank. These lines pull from the tank close to the top of the tank. They cross over and feed the main saddle tanks opposite sides in the boat. Circulating the fuel and ballasting the boat as you cruise along. The other line running out of the tank has a T in line in the boat. From there one line has a filter on it and feeds the furnace. The other line can provide fuel to the DD. The gravity feed for the furnace is nice. There are valves fixed to all the lines. Proved so far to be very simple and effective for my needs. Willy Invader no 1 39 Kishi conversion