One other thing to add, when looking at the link in Arcticm’s posting, there was a posting in there about needing to pay, to get your VHF registered, so that it would give your location. My Standard horizon blocked out functions, till I got it registered, and entered my registration #. Took some internet searching, but found a way to do it for free. It was a little confusing, but I received my #, and didn’t have to pay. I may have saved the site, if not, I think I wrote it down in my manual. If you were to pay, prices were all over the ball park. Anywhere from $15-$60
Just looked, I think I used Maritime mobile service identity.
Also look at FCC.gov/ship-radio-stations, for info