Maps Unique… over 3000 waypoints off the Carolinas
This data was collected by Captain Chip Berry of Maps Unique starting in 1988 and has been improved to where it covers a large part of the central east coast. Maps Unique has been selling the waypoints on large format paper charts where the user has had to hand enter the data off the chart into his GPS. With this product, you do not have to do any typing to get it into your GPS. See https://www.mapsunique.com/ for more details. These details include a ‘user guide’ that tells how to best use the data.
The Maps Unique data base is a $200 add on to the SeaMarks Program in USB format.