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Boat Dimensions
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Maximum Capacity
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Max Persons
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Max Weight (lbs)
Based on USCG formula: Max Persons = (Length × Width) / 15. Weight = Persons × 185 lbs.
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Check Your Load
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Current Load (lbs)
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Remaining (lbs)
Enter load details above
About This Calculator
The USCG capacity formula applies to monohull boats under 26 feet. Larger vessels and pontoons may have different ratings stamped on their capacity plate.
Weight Distribution Tips
- Distribute weight evenly from bow to stern and side to side
- Keep heavy items low and centered
- Never exceed the capacity plate rating on your boat
- Account for fuel, water, and ice weight (water: 8.3 lbs/gal, fuel: 6-7 lbs/gal)
- In rough water, reduce passenger count below maximum
- Children count as passengers for capacity purposes