Ten gallons is the sweet spot for a small boat's fresh water system - enough for a galley sink and a transom shower without commandeering a whole locker - and the Ronco Plastics B290 delivers it in a tidy marine molding that ships at just 19 lb. Full, it carries about 83 lb of water, a load a modest shelf with a pair of straps holds comfortably.
Ronco molds the B290 as a sealed blank and installs fittings per order: spin-weld or threaded, at the exact spots you mark. Small tanks tuck into tight corners, and tight corners are where factory-standard port locations go wrong, so this build-to-order approach is worth more here than on any big tank. Print the drawing below, sketch how the fill hose actually reaches the tank in your boat, and use the on-page fitting planner to fix the positions. The polyethylene is FDA-grade, so the supply is fully potable.
Like every Ronco tank, the B290 is molded in Tustin, California by a company that has done marine and RV water tanks since 1974. The boat tanks collection surrounds it with alternatives a few gallons either way, and the broader Ronco Plastics catalog covers everything else with a hull or wheels. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B290 dimensional drawing - print it to plan your install and mark exactly where you want fittings located; Ronco installs spin-weld or threaded fittings to your marked spec.
