Boat Capacity Calculator Australia
Estimate maximum passenger and weight capacity for boats based on Australian safety standards and hull dimensions.
How to Use
- Enter your boat's overall length in metres
- Enter the beam (maximum width) in metres
- Enter hull depth measured from gunwale to keel
- Select your hull type for accurate buoyancy estimation
- Click Calculate for capacity estimates
Note: This calculator provides estimates based on AS 1799 principles. Always refer to your boat's official compliance plate for certified capacity ratings. State maritime authorities may have additional requirements.
Frequently Asked Questions
How many people can my boat hold legally in Australia?
Check your boat compliance plate — it shows the maximum persons and load. If your boat predates compliance plates, state maritime authorities provide formulas based on hull length and beam. This calculator estimates capacity using AS 1799 principles.
What is the 75 kg rule for boat capacity?
Australian standards use 75 kg as the average person weight when calculating maximum persons. Multiply the max persons rating by 75 kg to get the weight allowance for passengers — then subtract from the total max load for gear and fuel.