About BoatOut

The numbers are scattered

Say you’re closing in on a boat purchase. The dealer quotes a price, the bank quotes an APR, and you’re left doing the arithmetic yourself to see what the monthly payment and total interest actually add up to. Or you already own the boat, and you’re trying to work out what a season really costs once storage, insurance, and winterization sit alongside the obvious fuel and slip fees. Or it’s launch day, the boat, motor, full fuel tank, and gear are all loaded, and you’re not sure the truck can handle it once it’s hitched to the trailer. None of these are hard questions on their own — they’re just scattered across dealer brochures, forum threads, and rules of thumb that don’t quite fit your boat.

BoatOut puts that math in one place, built around the numbers a boater actually has on hand rather than the numbers a brochure wants you to see.

What’s here to help

The Boat Loan Calculatorturns a boat’s price, your down payment and trade-in, the APR, and the loan term into a monthly payment, the total interest, and the true all-in cost of financing. The Boat Fuel Cost Calculator prices a day on the water from your engine’s gallons-per-hour burn rate, the hours you’ll run (or the distance and cruising speed), and the price at the dock — with support for twin engines. The Boat Maintenance Cost Calculator estimates a year of ownership using the common ~10%-of-value maintenance rule of thumb alongside your own storage, insurance, and winterization costs, broken into annual and monthly totals.

Before you tow, the Boat Trailer Weight Calculator adds the boat, engine, fuel, water, gear, and trailer into a true gross towing weight and checks it against your vehicle’s rating using an 80%-safety-margin guideline. The Anchor Size Calculatorgives a fluke-anchor weight range for your boat’s length and the conditions you anchor in, the matching chain diameter, and how much rode to pay out at the classic 7:1 scope. And if you’re still deciding what to buy, the Boat Size Guidetakes your primary activity, passenger count, and the water you’ll boat on, and returns a length range and a type or two that fit.

For background reading rather than numbers, the Museum of Boats & Seafaringis a separate, browsable collection covering boats and watercraft, seamanship and equipment, famous vessels and the Age of Sail, and the navigators who charted the world — sourced from Wikipedia and Wikimedia Commons. The blog and learn sections cover the same ground in longer form.

What this is — and isn’t

BoatOut is an independent, advertising-supported site. It isn’t affiliated with any boat manufacturer, lender, marina, or marine standards body, and none of the calculators are certified by one. The formulas lean on documented conventions and common rules of thumb — the ~10% maintenance guideline, 7:1 anchor scope, an 80% towing margin — not proprietary data, so treat every result as a planning estimate, not a quote or a guarantee. That matters most for the safety-related numbers: always weigh a loaded trailer against your tow vehicle’s actual rated capacity, and confirm ground tackle and onboard safety equipment against your boat and engine manufacturers’ documentation and standard safe-boating practice before you leave the dock. This is general information, not professional marine, financial, or safety advice.

Questions, or something not adding up? Get in touch.