Summary: This is a great GPS receiver. I use it as the primary navigation instrument on my 32' catamaran. I have a cable that draws power from the boat's 12VDC system and provides speed information to the other instruments. It has been supplanted by the 72H which has a USB connector. That should make it easier to transfer waypoints and routes between the GPS and a computer. I have to use a USB to serial converter, but it does the job.
Summary: I’ve had my 72 for nearly five years. Admittedly we don’t use it all the time, but together with a chart and the sort of planning sailing skippers are supposed to do anyway, it has gotten us up and down the Chesapeake Bay and the lower Potomac – reassuring on overnight trips and has proven great at sailing speeds (which is all I have used it for so far). Doesn’t seem to need an external antenna even inside sailboat rigging and is not sensitive to an occasional splash.
Summary: I sail year-round in New England. I need back up GPS units in case my main power fails. This is good for what I need. The odd thing is that while the unit does not display a chart, it does display bouys. It is tricky using this feature, because you don't easily know how far apart the bouys are. Always use it with charts, not stand alone. The Compass feature is EXCELLENT as long as you are moving.
Summary: Bought ours in 2003 while prospecting at Rye Patch, Nevada. There weren't many choices but after all these years I have always been so glad we got this gps unit. We have used it all over even diving on a submerged geocache. Never had any complaints with the exception that the kids ate the button off and it was repaired under warranty for free and the next week I shoved it in the door of the CRV and broke the new button off!
Summary: I'm very pleased to see that Garmin still offers this fantastic navigation instrument. It is large enough to float (not as dense as the micro-units), the screen is larger and large enough to read even without normally-required corrective lenses, it is rugged and amazingly shockproof, and it is the first GPS I have used that has been truly waterproof - so far anyway, after several years of hard use in whatever weather coastal Alaska has put it through.