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  #1  
Old 12-20-2007
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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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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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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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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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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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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?

Bill
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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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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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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.
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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.
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