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Engine and Gearbox Selection

Bring The Power

Manufacturers and distributors of drive equipment — engines, motors, and transmissions that rotate the propulsor — need capable tools to select the proper models and specifications that meet the vessel’s requirements. Professionals from Drive companies across the globe rely on NavCad or PropExpert for application engineering.

Dynamic Engine Performance

Engine selection is more than identifying a Rated Power and RPM. Robust engine power curves and differences in overload regimes affect operation throughout a ship’s duty profile. Our software illuminates investigation of steady-state performance, off-design operation, variations in CPP control, dynamic conditions such as towing or planing acceleration, and modeling of engine RPM change rate limits.

Simple Transmission Selection

One focus of PropExpert is gearbox selection for conventional vessels with shaft-driven propellers. Its simple analysis tool assists in proper sizing, while PropExpert’s intuitive interface is very popular with engine and gearbox companies, as well as other marine professionals that require quick sizing for applications with limited vessel data.

Shrinking Maritime’s Carbon Footprint

The international regulation of greenhouse gas emissions has become a major design driver. NavCad provides naval architects and operations managers with the ability to predict fuel consumption metrics and CO2 production across a ship’s operating profile, as well as to investigate fuel options – including LNG and dual-fuel operation.

Hydrodynamic and Propulsion System Design Tools

NavCad by Hydrocomp


The flagship framework for entire resistance, propulsion, mission profile, and optimized performance design tasks

PropElements by Hydrocomp


HydroComp’s “design for performance” propeller tool to customize and optimize a propeller for a specific ship or vessel type

PropCad by Hydrocomp


The industry’s most popular commercial tool for propeller “design for manufacture”

PropExpert by Hydrocomp


This “propeller application sizing” tool is the favorite of marine propeller, engine, and drive companies from main-office OEMs through their distribution pipeline


HYDROCourses is the newest innovation from HydroComp, Inc.

Our new HYDROCourses were designed to provide clear and consistent content and to facilitate easy-to understand delivery of typically complex topics. These courses will sharpen your existing proficiencies - or even build new skills - while providing practical and insightful knowledge. Explore key subjects about hydrodynamics and propellers in a flexible on-demand format, so learning is at your own pace and convenience.

Newly Added Courses

Propeller Repitching

This certificate course is appropriate for propeller repair shops, propulsion equipment vendors, naval architects, and boat builders seeking repitch knowledge.

Pushboats and Propellers

This certificate course will review important characteristics of pushboats propellers and is vital for those involved with inland waterways transport systems.

Engine Power Curves

This certificate course will review how a full engine power curve is needed to properly evaluate vessel performance in off-design and dynamic conditions.