Fifty inches long, 8 inches tall: the BOAT50W is a plank of water - 27 gallons laid out flat for the spaces that only exist in two dimensions. Under cockpit soles, beneath berth flats, atop stringers with a hatch above: wherever you have length and beam but no depth, this is the molding that turns dead volume into supply.
Ronco builds it to the H.D. marine standard with the heavy wall, in FDA-compliant polyethylene rated for potable water, molded in Tustin, California - a rotomolding operation running since 1974. Like the rest of the line it ships blank, with fittings spin-welded or thread-installed per order at the points you mark. Print the drawing below and use the fitting planner on this page to lay out your connections; low tanks especially reward planning the pickup location.
Full, it carries about 225 lb spread thin across the 50 x 16 inch bottom - an easy load for any continuous shelf. Compare the longer planks in boat tanks, see light-duty low profiles under RV water tanks, or browse the range on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.