Re: Curious about laws for boats that have no capacity plate
Federal law requires single-hull boats less than 20 feet in length to have a capacity plate. (However, PWC and sailboat manufacturers are not required to attach a capacity plate.) Always follow the recommended capacity found in the owner's manual and on the manufacturer's warning decal. Never exceed these capacity recommendations.
On vessels with no capacity plate, use the following rule of thumb to calculate the number of persons (weighing 150 lbs. each, on average) the vessel can carry safely in good weather conditions.
Number of people = vessel length (ft.) x vessel width (ft.)/15
For example, for a vessel 18 feet long by 6 feet wide, the number of persons is 18 times 6 (or 108) divided by 15, which equals seven 150-lb. persons (or a total person weight of 7 x 150, or 1050 lbs.).
Note: On outboard boats, the capacity plate also will display the recommended maximum horsepower rating of the boat. Your boat's motor should never exceed this rating.