Originally Posted by
Humminbird_Greg
In Humminbird units we use either North-Up, Heading-Up or Course-Up menu settings. I’m not sure if that was not the original intended question or not but thought that I would toss it into the conversation anyways.
North-Up: I think everyone understands that the top of the display will always be North (whether Magnetic North or True North will depend on the North Reference menu setting).
Heading-Up: The top of the display will be the direction that the boat is pointing. Due to wind and waves, the boat may be traveling in a slightly different direction than it is heading, and therefore Heading is often confused with Course Over Ground (COG).
Course-Up: The top of the display will be the current direction that the boat is traveling. This may differ from the actual heading of the boat.