Re: Do you own a marine gps?
Gotta agree with Reel Poor. Every boat must have a decent compass, period.
I teach navigation for the USCG licensing program, and had a student last winter who saved his life -- and his son's life -- while ice fishing on NY's finger lakes because he had a compass with him. Storm blew in, snow reduced visibility to zero, and his GPS lost signal. But the compass continued to work, of course. That allowed him to find shore and his car.
We have two GPS units aboard: An ancient Magellan Nav1200XL (circa 1994) that does not have any graphics, aside from a pointer, and the same thing in a handheld/bracket-mount unit, a Magellan MeridianXL (same vintage and software). We use these in combination with paper charts.
Would love a chartplotting GPS, but the old units just running and running...