A pendant buoy must generate enough upward force to counteract the maximum tension in the mooring line, including a safety margin. The buoyancy force is governed by Archimedes’ principle, which states that the upward force equals the weight of the displaced water.
The required buoy volume is therefore a function of the pendant load, water density, gravitational acceleration, and the buoy’s shape factor (often expressed as a drag coefficient for streamlined buoys). Selecting an appropriate safety factor ensures the buoy remains effective under dynamic conditions such as waves and currents.
By rearranging the buoyancy equation, the minimum buoy diameter can be derived. This diameter is critical for ensuring the buoy’s structural integrity and its ability to stay afloat without excessive sub‑mersion.
How do I calculate the buoy volume for a pendant buoy?
What factors affect the buoy diameter calculation?
How does safety margin influence the buoy size?
What is Archimedes’ principle in relation to buoys?
How do I adjust the calculation for different water densities?
Can you explain the role of the shape factor in buoy calculations?
What should I consider when choosing the material for the pendant buoy?
Results are for informational purposes only and do not constitute professional advice.