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Power Fleet: The Predicted Navigation Rally
other Boating/Navigation Information

Predicted Navigation Websites


International Power Boat Association
Annual Meeting - 11/12/2020

Click Link below:
IPBA Annual Mtg/Banquet

What is a Predicted Navigation Rally?
(‘aka’ Predicted Log Race)

it's a navigation contest where each skipper (contestant) attempts to accurately predict the time it will take to navigate a specified course in their boat. This involves the precise calculation of the time in hours, minutes, and seconds required to cruise a prescribed course. The course is described with ‘true headings’ and ‘distances’ in nautical miles for each leg. Once the skipper (contestant) makes his/her calculations and fills out the “Predicted Log”, he/she then navigates the boat on the prescribed course, using only a compass and the boat's tachometer (RPM gauge). The winner is the skipper who can predict the time with the smallest percentage error.

For more information contact:
Jim Anderson: Cell: (253) 312-2967 or

Publications and Predicted Navigation Tools

NACA button

IPBA Bylaws and Rules

US Coast Guard Rules