Next I want a map for my Lowrance so I export the map contours as a LCM file to a SD card and insert it into my Lowrance for this map.
All you need is a Lowrance or Humminbird to collect the data and DrDepth (place link to DrDepth in online store) software to import the data and create all the maps I have demonstrated.
Google Earth is a free download and works similar to Google maps.
Lowrance collects the data with the log chart feature and Humminbird with the tracks (trails). Humminbird cannot display the map except as trails at this time.
Lowrance displays the maps as shown to the right.