The start of a decent SONAR pass CHIRP SONAR image of the Wawinet Another run over the Wawinet. At left in the split screen is the boat’s course. The bottom contours, overlaying the contours of Garmin’s detailed fishing-mode nav chart, were generated by me using Garmin’s QuickDraw technology, which converts sonar soundings into contours. (The …
Author: Douglas Hunter
Author, illustrator, historian. PhD in history.
Wild Great Lakes 