Marine Propeller Design
Explore a marine screw from a published reference or your own blade distributions. The Marine workspace shares PropShaper’s geometry engine with e-foil design while emphasizing advance speed, blade area and drive fit.
Start from your motor and battery
For electric boats and trolling motors, Quick design asks for motor kV, battery, current limit, boat and load weight, cruise speed, hull type and maximum diameter. It sizes the prop, checks thrust, current, cavitation and tip speed, and fits a standard shaft such as the Minn Kota pin drives, or a D shaft or cross pin you measure yourself.
Use a traceable starting point
The reference library includes Wageningen B-series outlines and thickness tables derived from published data. Each entry identifies its source and limitations. Loading a reference sets blade geometry; it does not verify a shaft interface or reproduce a manufacturer’s complete propeller.
Compare geometry at a stated operating point
Diameter, pitch, blade count and expanded blade-area ratio describe different aspects of a marine propeller. Adjust distributions and use the Performance panel to inspect thrust and power across advance ratios. State RPM, advance speed and shaft depth when comparing designs. The current water properties represent fresh water at 15 °C, not a configurable seawater environment.
Review analysis limits before fabrication
Cavitation-number and Keller blade-area readouts help inspect assumptions; they do not predict cavitating flow. Root-strength analysis is a static check and does not cover fatigue, impact or print layer adhesion. Export STL for mesh workflows or STEP for supported solid geometry, then verify the hub and fabrication requirements independently.
Fit your motor
Browse the hub standards: bore, bolt pattern and pin dimensions for common drone, RC, e-foil and trolling motor mounts, with sources.
Understand the calculations
Read the geometry, performance and export methods for assumptions and validation, or use the propeller analysis API.