I think I recorded just tracks. Another question how can I visualize HT files? cant open those with Humminbird PC...
HumminbirdPC can download Navdata contained in the MATRIX folder on the SD-card(which you should have exported from your unit).
MATRIX folder will contain HB's DATA.HWR and the nn.HT files. DATA.HWR will contain waypoints and routes. The .HT files will contain the saved-tracks. One track per .HT file.
HumminbirdPC can also OPEN the individual HB .HWR and .HT files by using File>Open, then setting Files of Type box. Choices are GPX files(*.GPX), Humminbird files(*.HWR, *.HT), Garmin files(*.GDP,*.MPS) or Lowrance files(*.LOW, *.USR). You would change to Humminbird Files(*.HWR,*.HT), then you can select the desired .HT file or select multiple .HT files).
HumminbirdPC can then display the tracks in Google Earth.