OziExplorer track(.plt): Ozi Explorer format that stores track as a list of coordinates of track's points.
NMEA messages (.txt): National Marine Electronics Association text file, communications protocol used in sea navigation equipment.
Attention! Parameters (sensors) are not stored when exporting to this format.
Google Earth (.kml): an XML-based format used in Google Earth to transmit three-dimensional geospatial data.
You can also run the Message Tracing report, which is a little more readable version of the standard export.