Re: Dumb? is there a monthly fee for GPS
Fwiw, the goal of marine GPS, DGPS, Loran, etc is currently 10-meter accuracy. Eventually, when 5-meter accuracy can be obtained the system development is supposed to stop. The whole purposed of the accuracy for all this marine navigational stuff is to safely move big ships in harbours, not for finding your favorite fishing hole.

Theres a conflict between what GPS was intended for and security vs. what we use it for and crashing boats into each other. Only in the last couple of years has the Dept of Defense committed to 10-meter accuracy, the USCG wants 5-meters.