The Sailing GPS is the first GPS in the world that accounts for the tacking that sailboats do. It can tell you the optimal tacking angles and your Tacking Time to Destination (TTD).
Standard GPS chartplotters do not account for the fact that sailboats tack back and forth. But if they don’t know your tacking distances, how can they calculate your Estimated Time of Arrival (ETA) correctly? The Sailing GPS solves this problem. It displays exactly how far each tack is, how long it will take to sail each tack, and the optimal tacks to arrive earliest. You can also use Google Maps to easily mark a few waypoints, and send them through the air to The Sailing GPS with Bluetooth. Much easier than manually entering long strings of numbers for the latitude/longitude of multiple waypoints.
The Sailing GPS can even learn the unique “polar plots” for your individual vessel. This is not just a generic polar plot for all sailboats of a certain type, or estimates from a simulation. The Sailing GPS learns your unique vessel’s actual performance on all different points of sail. It can then calculate your optimal tacking routes and Tacking Time to Destination (TTD). Later, you can transfer the polar plot data via Bluetooth to a PC, if you want to see your boat’s unique speed profile across wind angles and wind speeds. SailTimer Inc., the manufacturer of The Sailing GPS, received final patent approval in March of this year for its pioneering R&D.
“This technology is a big step forward for sailors,” said Dr. Craig Summers, the President of SailTimer Inc. “People assume that since GPS satellites can pinpoint our location on the Earth, everything shown on a GPS chartplotter must be very accurate. But if you head upwind on a tack, standard GPS units view your tack as cross-track ‘error’. They also don’t account for tacking distances in your ETA, and even if your speed remains constant VMG decreases all by itself the longer you stay on the tack. In the digital age, sailors need a GPS that displays simple, safe, correct information.”
The new patent, titled “Navigational Planning and Display Method for the Sailor’s Dilemma When Heading Upwind”, was granted by the US Patent and Trademark Office this year, and originally filed in 2006.
For more information, go to www.thesailinggps.com.