“Wow, where can I get that?”

That’s what boaters ask when I show off Navionics Boating.

This $9.99 app gives lake sailors features that our coastal and Great Lakes cousins use on chartplotters costing thousands of dollars.  You can even get some features in a free version of the app but the included government charts are lower detail.

I’m not saying I need full-featured charting on my lake (about 2 miles at its widest), or that the iPhone screen is a substitute for bluewater electronics.  But it is pretty cool to have similar data when I’m tacking around Lake Travis for an afternoon.

Last month I used Navionics to set the anchor for a race committee boat when we couldn’t find a spot shallow enough to drop anchor.  The onboard depth finder was fine for measuring depth where we were.  Finding where to go – now that’s better!  Using Navionics we motored around to a shallower spot and dropped anchor there.

Local readers will know that Lake Travis’s depth changes dramatically (up 50 feet this year alone).  So it’s great that Navionics has level adjustment.  Just look up the current lake level and punch in the adjustment (minus 11 feet, for example) before your trip.  Now all the charted depths are accurate for the current level.

I used Navionics on our family charter in Puerto Rico this summer and the charts were a nice backup to the boat’s chart plotter (Puerto Rico was an extra $14.99).

Boating is available for iPhone and Android.  Although I haven’t used it much, it also has crowd-sourced charts that include updates on marinas and other points of interest added by fellow boaters.

A screenshot below of a trip this summer using Boating.

 

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Chart of Lake Travis, Austin, TX on my iPhone.  Notice the dramatic depth contours in just a few hundred feet.  It’s nice to know where the deep (and shallow!) spots are.