The BOAT14W puts 11 gallons of fresh water into a shell 24 x 15.5 x 8.25 inches - barely eight and a quarter inches tall, the flattest way this capacity comes in the heavy-duty marine family. It is drawn for under-sole and under-berth voids in small cruisers, where the question is never how much room you have but how little height.
The blank weighs 8 lb; full, the contents come to about 92 lb spread across a wide, low footprint that flat structure carries easily. The wall is Ronco's thicker heavy-duty marine spec in FDA-compliant potable polyethylene, so the shallow profile gives up nothing in toughness.
Fittings are installed per order at the Tustin, California plant - spin-welded or threaded exactly where you mark them, as Ronco has built since 1974. Shallow tanks concentrate all their fittings on one crowded top face, so print the drawing below, space fill, vent, and pickup deliberately, and confirm the layout in the on-page fitting planner.
The same capacity in a taller box is elsewhere in boat tanks; light-duty near-sizes include the 12-gallon RV16W, and the full catalog is on the Ronco Plastics hub. OneSource Plastics is an authorized Ronco Plastics dealer.