Finally, software that takes the guesswork out of props and boat performance!

This software is an invaluable tool for anyone who owns, operates, or services boats or other marine craft. Have you been thinking about a new prop for your boat? Do you want to know at what R.P.M. you need to reach or cruise a certain speed? Want to know how fast your boat will run with a different prop? Don't know which pitch will give you the best speed? This software will help you!

Props are expensive and usually NON-returnable, so guessing is certainly not cheap. Roth Company's Boat Speed, Slip and Prop Calculator will help you find the best prop for your boat without the stress and expense of guesswork.

Features Include:
Built in hull and slip types to pick from.
Built in drive ratios to pick from.
Custom entry fields for any individual slip or drive ratio.
EXCLUSIVE integrated GPS feature to discover your boats speed in real time.
Over drive and or under drive ratios supported.
Prop pitch entry.
Engine RPM entry.
EXCLUSIVE multiple bladed prop selection from two to five blades.
Units supported include MPH, KPH, and KNOTS.
Alerts, sounds and visual aids to make the process fun and easy.
Ready to use intuitive interface and full instructions for assistance if needed.

Full calculations for boat speed as well as a detailed, feature rich calculator to find your individual boat slip! You can enter your own speed values or you can utilize the built in GPS feature!

Some supported types include: I/O's, outboards, inboards, gasoline, diesel, two stroke, four stroke, two, three, four and five bladed props. Under drive, overdrive, cruiser, cuddy, fishing boat, bow rider, catamaran, flat bottom, pontoon and many more.

Finally take the guess work out sizing up and buying a prop! Buy the right prop based on data. Determine your boats theoretic performance with any configuration and do it all with this fun, easy to use, intuitive application!