The Ronco Plastics B289 gives a cruising boat 65 gallons of fresh water in a molding that keeps its own weight down to 52 lb - a genuinely light shell for the capacity, and a real difference when you are lowering a tank through a cabin hatch alone. Filled, it holds about 542 lb of water, so the light shell should still land on solid, fully supported structure.
It arrives as a sealed blank because Ronco builds each tank's fittings per order rather than punching a standard pattern. Spin-weld or threaded, every fill, outlet and vent goes exactly where your plumbing diagram wants it. That is the difference between a tank you plumb in an afternoon and one you fight for a weekend: print the drawing below, mark your ports, and let the on-page fitting planner sanity-check clearances before the order goes in. The polyethylene is FDA-grade end to end, so the water stays potable from fill to faucet.
Ronco Plastics has molded marine water tanks in Tustin, California since 1974, and mid-size cruiser tanks like the B289 are the core of that catalog. Our boat tanks shelf carries its siblings in other footprints, and the freight cost estimator will price delivery to your ZIP in a few seconds. OneSource Plastics is an authorized Ronco Plastics dealer.
Technical drawing: download the Ronco Plastics B289 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.
