hers' the link that show you how to activate boat mode in nuvi 550.
An interesting link, both informative and amusing to read, thanks.
One question. The 550 places the vehicle on the road, if it's assumed to be a car; and places it on the water, if assumed to be a boat. Very reasonable, the question is "where does the gps measure the vehicle to be, before it guesses the best location to display it?"
This comes down to the accuracy of the gps. My 855 is about 20 to 30 feet. With this accuracy, I would not like to navigate in some of the areas I take boats. Fine in open water, but if I'm in rivers with shoals, or close to shore, it would make me worry, especially at night. In fact one model had me really worried. I was navigating more by the depth sounder and the paper chart rather then the gps.
I have used several gps units in boats. Some specifically designed for nautical use and others modified auto units, with nautical charts. The nautical ones had a much improved accuracy compared withe modified ones. Typically 5 to 10 feet. They were also much more expensive!
Thanks for that info and link.
I never realized that any of Garmin's GPS units that were not specifically advertised as "Marine Units" could utilize marine charts.
Makes me very curious how many other units may have this capability.
I don't see any reason why the accuracy would/should be any less as long as you placed a real marine chart, such as the Garmin BlueChart on the unit.
Thank you for the excellent post and link.
Don't do boating anymore, but that is very useful information.
The specs for the 500 and 550 specifically mention that they are "Marine-friendly". The specs for other Nuvi models all state that they are not "Marine-friendly". Although I suspect that marine friendly means you can get them wet to some degree, something you don't ever want to do with most other Nuvi models, it may well also mean that they do have the ability to be used in marine mode.
If you can afford a boat that goes far enough offshore that needs a GPS, you probably can afford getting a real one.
Just a thought from one that can't afford ... ...
Well when I used to use my boat for diving, people would line up behind me, when it was foggy, to find the entrance to the Mission Bay Channel.
Nothing like being able to find my way back to the dock when visibility was down 50 yards.
Along with a good 'chart reader' and comms gear!
Marine mode = waterproof (to some degree), and a button enabling 'boating' mode...
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