HydroComp has developed two products for hydrodynamic design and analysis – PropExpert and NavCad.

Whether you’re a manufacturer, vendor, designer, or boat builder, if you regularly need to select propellers or transmissions for workboats or pleasure craft – or simply want to understand how a specific propeller will perform on a vessel – PropExpert is the tool built for you. PropExpert is typically used to calculate optimum diameter, pitch, reduction gear ratio, and blade area for open or ducted propeller systems.  It’s the marine industry’s most widely used propeller‑sizing program, relied upon every day by engine distributors and propeller professionals for accurate, dependable recommendations.

NavCad is a full‑featured vessel and propulsor system simulation and design tool used by naval architects and marine engineers to predict resistance, power, and speed
by integrating models of the hull, propulsor, and drive to develop a complete system simulation. It supports a wide range of vessel types—including workboats, patrol craft, ferries, fishing vessels, high‑speed craft, commercial ships, and recreational boats—making it the industry’s trusted solution for propulsion analysis throughout the design process.