You can create a data base within WASSP. The file extension given to these data bases is .g3maps. These data bases only contain the info that WASSP collects i.e. bottom detail, tracks and marks. Chart detail is separate. Now something about using Navionics charts with a WASSP computer is you just can't plug one in and expect it to display the chart. The computer must be connected to the internet the first time as every Navionics chart chip is encrypted with a code so it can't be copied. This registers the computer as a chart reader for
that chart chip. After the computer is registered it no long needs internet access.
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