The BOAT33W spreads 47 gallons across a broad, flat 40.5 x 25.25 x 12 inch platform - a shape drawn for the space under a double berth or a cockpit sole, where there is plenty of area but only a foot of height. Wide and low also happens to be the seaworthy way to carry this much water: the mass stays down and distributed instead of stacked.
This is a heavy-duty molding, wall thickness a clear step above Ronco's standard light-duty shells, in FDA-compliant polyethylene rated for drinking water. Tustin, California production since 1974. Like every Ronco tank it ships as a blank with fittings spin-welded or thread-installed exactly where you mark them - print the drawing below and lay out your connections with the on-page fitting planner before you order.
At 8.34 lb per gallon, a full BOAT33W carries about 392 lb, so plan continuous support under the whole bottom panel. Compare berth-sized footprints in boat tanks, estimate delivery with the freight cost estimator, or browse the maker's range on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.