The LakeMaster map features: Follow the Contour, Depth Highlight Range, Water Level Offset and Shallow Water Highlight are features only associated with the Humminbird LakeMaster and CoastMaster product family. These features do not work with a Navionics Map Chip.
Please see the following link for more information on our LakeMaster products.
If Coastal fishing is your interest, you may want to learn more about our CoastMaster products.
