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Old 31 October 2006, 04:28   #11
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I recommend a Garmin 60Cx with Blue Charts mapping. You can get an adapter for a 12V plug, it is waterproof, does auto routing if you have City Nav and the marine charts are pretty darn good with bathymetric depth lines, marks and all. There is a 60CSx that also has a fluxgate compass and altitude computation but I don't recommend it. The 60 Cx is bulletproof! It is a hand held and you can also get marine mount and auto mounts for it. It's antenna and chip set are a new deal and are very very good at obtaining and holding a fix in adverse conditions such as tree or cloud cover.
Can highly recommend this one as well, I have one and am very pleased with it. Easy to use and clear screen.
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Old 31 October 2006, 04:33   #12
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I've got a GPS72 and though I haven't figured out how it all works yet it seems ok and is supposed to be waterproof.

Regarding battery life I'd add a cautionary note about believing manufacturers claims - I also have an eTrex (basic "yellow peril" model) with a claimed battery life of 22 hours - not a chance! - half that if you are lucky though I've never measured it. The eTrex is supposed to be waterproof except for the battery compartment which isn't, so if you drop it in the oggin all you'd need is a new set of batteries.

Mapping GPS's are not a lot of use here as the base maps are a bit restricted. I was driving a visitor around the Islands a couple of weeks ago with a 500 odd fancy mapping GPS he bought to record where he'd been. The base map of the coastline of East Falkland (island measuring about 50 miles NW/SE x about 100 NE/SW)was made up of about eight straight lines so he gave up after the first day because it kept saying we were in the water
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Old 31 October 2006, 08:07   #13
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That's my point - just how good are the maps on these small GPS units? With a PDA if you are crafty enough you can use good paper maps and even aerial photos and see exactly where you are!!!
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Old 31 October 2006, 09:52   #14
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Take a look at the Lowrance H2Oc. Nice big high resolution colour screen. IPX7 waterproof, 12v lead, Navionics or Nauticpath cartography.

Plus NMEA output with data cable (for your DSC) which some of the others don't have.

You can buy it currently for under 300 with the chart included.

TT
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Old 31 October 2006, 14:33   #15
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Most of the plotters come with a very limited basemap. You gotta spring for some extra dinero for the advanced land based or water based charts. I read the Steve's post from the South Atlantic and the follwing conditions apply to the expensive units. They will either route by following a road or simply straight line from point a to point b as one would usually do in the water. I don't know what maps they had in the unit or the quality of either basemaps or enhanced maps for the Falklands but it sounds like it wasn't set up to Follow the Road when navigating. The enhanced maps for most of the world are truly remarkable at this point and the software is the same for either large units or handhelds water side or land side.
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Old 31 October 2006, 14:35   #16
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More than you ever wanted to know....

About GPS

http://forums.groundspeak.com/GC/index.php?act=idx
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Old 31 October 2006, 21:23   #17
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Quote:
Originally Posted by Texel Tom View Post
Take a look at the Lowrance H2Oc. Nice big high resolution colour screen. IPX7 waterproof, 12v lead, Navionics or Nauticpath cartography.
This the unit I use for my backup unit. As well as the Navionic chart, it has a lower resolution chart of the world (the ones here are mid-rez. for the US). When using the Navionic chart, the screen refreshes more slowly than my fixed mount unit. I presume that this is just a processor speed issue. In areas where the chart has a lot of data, (like our "30,000 Islands) this slow refresh might be an issue in a fast boat. Although if there's that much stuff in the water, presumably you aren't going to fast!
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Old 01 November 2006, 03:06   #18
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Lowrance's own NauticPath charts are very good but do have less detail than Navionics which does have the benefit of faster re-draw rates. Mine seems OK. The other really nice feature is that with an extra fairly cheap MMC/card reader you can do all your passage planning on your PC via free emulator software and then save it all to the card and transfer it to the unit.

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Old 01 November 2006, 03:47   #19
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Where

Where is the best place to get the Lowrance H2Oc from, have heard good things and like the idea of MapCreate Software. Do not want fixed GPS coz boat is not mine, but I do borrow it regularly.

regards, Stefan
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Old 01 November 2006, 04:28   #20
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I found this one on Ebay
looks like a decent price.
http://cgi.ebay.co.uk/LOWRANCE-H2Oc-...QQcmdZViewItem
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