Seamarks is software for your computer or mobile device that 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 Inlet, 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. With the “SeaMarks” software program, users have routines for organizing, displaying, printing, plotting, and planning that will provide coordination and clarity for all your waypoints. Yes— you can manually add or import your own waypoints to SeaMarks in either GPS or Loran. You can also create your own custom colored maps along with custom log books of all your data (and Maps Unique too) and save and update these as needed. SeaMarks accepts GPS data, Loran data, or both. The program automatically converts Loran coordinates to ASF corrected GPS coordinates or vise-versa.