This might help...Fishing Maps may display the same as Google Earth.
"For some reason Google Earth uses DD MM SS.S (degrees, minutes, and seconds to one decimal) for coordinates. This was the traditional way of showing latitude and longitude, I remember it when I first learned of these two concepts in upper elementary school in the late 70's.
But in the last decade or so, using DD.DDDDD (just degrees and the decimal) or more so DD MM.MMM (Degrees and minutes to the 3rd decimal) are more common. The latter is the official geocaching coordinate method and is usually the default way that most GPSrs show coordinates (though a GPS I used to own, the Galileo by the Whistler radar detector people, ONLY showed coords the Google Earth way; and it seems one of the two GPSr I now have, the Lowrance IWay 100M, ONLY shows it the geocaching way).
Most GPSr's nowadays have the ability to show coordinates in any of the 3 formats, so you could manually enter a waypoint the way it's shown on Google Earth, then ask the GPS to show it as DD MM.MMM format."