In a bind - need GPS buying help - SailNet Community
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post #1 of 39 Old 12-20-2007 Thread Starter
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In a bind - need GPS buying help

Is anyone familiar with a new GPS chartplotter that does automatic routing based on depths rather than requireing you to put in every waypoint? I'm told this exists as a handheld and I'm trying to find one for a Christmas gift. As you might guess, I'm under a bit of pressure.
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post #2 of 39 Old 12-20-2007
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You may be talking about:Garmin...
For even greater capabilities, boaters can load the new MFDs with BlueChart® g2 Vision™ technology – conveniently available on a pre-programmed SD card. In addition to high-res satellite imagery, g2 Vision features true “mariner’s eye view” above water or a “fish eye” underwater perspective – both in three dimensions. The g2 Vision data card also enables auto guidance technology on compatible units – searching all the chart attributes to suggest the best navigational course. For help in navigating tricky harbors and channels – or locating marinas and resorts – g2 Vision cards offer a growing database of aerial reference photos. BlueChart g2 Vision capabilities are only available when the optional card is loaded in a compatible chartplotter.

http://www8.garmin.com/pressroom/marine/111207b.html

I do not find a handheld with this but perhaps there is another mfr. with a similar system that I am not aware of. suggest you call garmin for units with bluechart g2 vision apabilty that ALSO can do auto-routing.
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post #3 of 39 Old 12-21-2007
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The only problem with using the Auto-routing feature of the new Garmins, is that I don't believe it works with the pre-loaded charts...and you have to purchase the G2 vision charts to cover the areas you want to use the auto-routing features in. This can add quite a bit of cost to using them.

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post #4 of 39 Old 12-21-2007
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I just bought a couple of GPS units, the Nuvi 660 for use in the car and the GPSMap 76CSx handheld for use on the boat. Since I bought these from Amazon and am currently in Boston but cruise in South-East Asia, I also bought the SD cards for my region (at about US$214 the card covers most of what I need). SD is correct, it adds significantly to the cost of the GPS, but I figure it's worth it.

The new bathymetric cards (http://www8.garmin.com/cartography/g2bathymetric/) are also available in SD cards and although the website does not list the 76CSx as compatible, it might be worth a call to see if they may still work.

They're not cheap and they only cover parts of the US, but the East Coast seems well covered.
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post #5 of 39 Old 12-21-2007
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Am I the only one that thinks that letting the judgement of a Garmin tech sitting in Olathe, KS decide what a good route for ME to sail, in say... SE Asia, might get me in trouble?

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post #6 of 39 Old 12-21-2007
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T34C,

Nope you're not. IMHO, this is absolute nonsense for any serious navigator.

Next step: program the damned thing, hook it to your autopilot, and send the boat on ahead.

You can then relax at 33,000 ft with a cocktail and be there before the boat arrives :-)

Are we fast becoming a bunch of techno idiots?

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post #7 of 39 Old 12-21-2007
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T34...what are you, some kind of luddite? Geez...the next thing you'll be telling us is that we need to carry paper charts!! (G)
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Personally, I wouldn't do it....

Also, IIRC, those units aren't available yet...until sometime next year.
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Originally Posted by T34C View Post
Am I the only one that thinks that letting the judgement of a Garmin tech sitting in Olathe, KS decide what a good route for ME to sail, in say... SE Asia, might get me in trouble?

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post #9 of 39 Old 12-21-2007
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Since it has NMEA 2000 output, yes, you could link up a suitable autohelm and have it follow the automatically planned track. Not a single way point along the track either. Ok for a stinkpot, but it will need wind and current information to compute a sailing boat's optimum upwind legs.

Would I use it? - Sure! Would I trust it? - Never! Would I trust the chart depth data it is using? - No! I have a depth sounder to watch. But the chart data itself, rocks, wrecks and coast lines? - I am not sure that paper charts are any better than digitised charts for obstacle positioning. Eyeball and radar help check that.

Bye the way btrayfors - when you are cruising at 30000 ft. It's usually an autopilot flying the aircraft.

Jonathan-Livingston
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post #10 of 39 Old 12-21-2007
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Quote:
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Bye the way btrayfors - when you are cruising at 30000 ft. It's usually an autopilot flying the aircraft.
Very few reefs at 30,000 ft.

hunter Legend 37 Semper Paratus
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