Reading Your Boat's Capacity Label (Old and New 2026 Format) and What It Means for a Repower

Look near the helm or tiller seat, on the console, or on the inside of the transom. Federal rules want it where the operator can see it when getting underway. Wash off dirt gently and photograph it straight on. Save the photo in your BoatMend boat profile so you have it when shopping for a motor or answering an insurer.

• Traditional label: a yellow panel headed "U.S. Coast Guard Maximum Capacities" (or just "Maximum Capacities" on bigger boats), with lines written out in words, such as "Maximum persons," "Maximum weight (persons, motor, gear)" and "Maximum horsepower."
• New ABYC S-7 label: ABYC's published example for an outboard boat under 20 feet keeps the "U.S. Coast Guard / Maximum Capacities" heading but shows three rows built around symbols and the words "NOT EXCEEDING": a person symbol with a number of people and a pound limit, a bag-plus-person symbol with a pound limit, and an outboard motor symbol with a horsepower figure and a pound limit.

Either way, if your boat has an NMMA certification logo on the plate, the builder was in NMMA's program, which Discover Boating says checks extra industry standards beyond the Coast Guard rules.

Both formats give a number of people and a weight. The weight is the real limit. On older plates the federal formula turns the pounds into people using an average weight that is lighter than most adults today (our capacity plate replacement guide explains the math). Add up your actual passengers' weights and go by whichever limit you hit first. The BoatUS Foundation also reminds owners that the number of seats is not the number of people a boat can safely carry.

On a traditional outboard plate, maximum weight covers persons, motor and gear. On inboard and sterndrive plates it's persons and gear, because the engine is already accounted for. On the new label, the second row shows symbols for gear and people. Because the new outboard label also gives a separate motor weight limit, ask the builder or dealer exactly what the second row includes on your boat before you do any load math. Count everything that's aboard: fuel, coolers, anchors, batteries, a trolling motor, tackle and water toys.

On outboard boats, the horsepower figure is the most power the boat was rated for (33 CFR 183.53 sets how builders calculate it, based on things like length, transom width and steering). Some traditional plates show two figures: a higher one for remote wheel steering and a lower one without it. Use the lower figure if your boat is tiller-steered. Inboard and sterndrive labels don't show a horsepower rating; for those, the builder's original engine options are your guide.

This is the big change. ABYC explains that outboards of the same horsepower now vary widely in weight, so the revised outboard label adds a maximum outboard motor running weight, which it describes as confirming the engine weight the transom was designed for. In plain terms: a motor can be within the horsepower limit and still be too heavy for the boat.

Two practical notes:

• "Running weight" may not equal "dry weight." Motor spec sheets usually list a dry weight. Ask the dealer or builder how the label's running weight is defined and how your motor compares, including anything that hangs on the transom with it (a jack plate, a bracket, the propeller, a kicker).
• Twins and kickers: if the boat has more than one motor, ask the builder how the weight limit applies to the combination.

Most boats on the water today won't have the new weight line. Before a repower:

• Ask the builder what motor weight the transom was designed for, and which motors it offered from the factory.
• Compare the dry weight of your old motor and the new one on the makers' spec sheets. Modern four-strokes are often heavier than the two-strokes they replace.
• If the new motor is noticeably heavier, ask the builder or a marine surveyor before you buy, and remember the extra weight counts against the plate's total weight figure.
• Why weight matters for flotation, too: on outboard boats under 20 feet, the federal swamped-flotation test is run with a standard weight standing in for the motor and controls, taken from a federal table for the boat's maximum rated horsepower (33 CFR 183.220 and Table 183.75). A motor much heavier than that figure wasn't part of the test, so the boat may float lower at the stern if it's ever swamped. One more reason to ask the builder before you hang a heavy motor.

Write down, for the motor you're considering:

• Horsepower vs. the label's maximum (use the right steering figure)
• Weight vs. the label's motor weight (new label) or the builder's answer (old label)
• Transom height and shaft length (see our outboard mounting guide)
• Condition of the transom: a soft or cracked transom can't safely carry even a rated motor (see our transom and stringer rot guide)

If any item is a "maybe," stop and ask the builder or a dealer before paying a deposit.

The BoatUS Foundation says exceeding the listed capacities is not a federal violation for the owner, but many states have laws against overloading or installing a motor above the rated horsepower, and you may void your insurance if you exceed the plate. Florida, for example, makes it an offense to operate a monohull under 20 feet while exceeding the maximum weight, persons or horsepower on the manufacturer's plate (per Florida's official boating course). Check your own state's boating law, and ask your insurer in writing before you mount a motor over the rating. Dealers may also decline to rig a motor above the plate.

The BoatUS Foundation is blunt: capacity plates should never be removed, altered or tampered with. You can't swap your old plate for a new-style label, add your own motor weight, or raise a number because "the boat handles it fine." Only the builder (or, for an orphan boat, a qualified naval architect) can supply new figures; our replacement guide covers that.

Once you know your numbers, use them: count people and add up weight before you leave, keep weight low and centered, and carry well under the maximum in rough water or when towing riders. Our weight distribution guide covers balance side to side and fore and aft.

Save the label photo, the builder's answers about horsepower and motor weight, and the spec sheets for the motor you installed. They help with insurance, a survey, and when you sell the boat.