hydrodynamic derivatives

Hydrodynamic derivatives are coefficients used in fluid dynamics to describe how a floating object, like a ship or a buoy, moves in response to forces in the water. They measure how the object's motion changes when subjected to waves, currents, or wind. For example, they help predict how a ship will tilt (or "pitch") and roll based on the water's movement. Understanding these derivatives is crucial for designing vessels to ensure stability and efficiency in various marine environments, ultimately enhancing safety and performance at sea.