Seamarks is software for your computer or mobile device that contains the entire Maps Unique databases already within the Andren SeaMarks program that includes over 4000 unique waypoints from South Georgia northward through Oregon Inle, NC.

All data in the series is updated to 2020. The data supplied includes— coordinates (L/L and Loran), place names, bottom structure type, and water depth.


Copy of Nav


Maps Unique waypoints custom formatted for your GPS model delivered on a SD card

Simply insert the Nav-Unique SD card in the GPS unit and click the function to upload data on your GPS

All Maps Unique waypoints are included, updated to 2020, which include natural bottom sites, all individual artificial reef structures, and wreck sites.