Trying to chose between these units, primarily for sailing.

I have only Macs, but can borrow a PC, so the software is somewhat
inconvenient but can be updated occasionally. So, the built-in
database is an issue. The Garmin website specifically mentions
nautical navaids in the GPS 76, but not in the basemap for the GPSMAP
76. Does the GPSMAP really lack bouys, etc, in the basemap?

Mike Wagenbach
Seattle