Dave
Elite Nomad
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Registered: 11-5-2002
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| Quote: | Originally posted by bajaeng
I'm looking for basic depth and underwater terrain information |
http://www.fishnmap.com/
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805gregg
Super Nomad
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Registered: 5-21-2006
Location: Ojai, Ca
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Get GPS more accurate.
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MrBillM
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Mood: It's a Zip-a-Dee-Doo-Dah Day
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GPS ?
How does that work to show the Underwater Topography ?
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Seriously, though, the resources that I have include:
Charlies' Charts for Mexico, including the Gulf of California (bought in 1988) http://www.charliescharts.com/
The sketches include depths where they might be a concern when navigating or anchoring.
NIMA (National Imagery Mapping Agency) Chart for the Gulf of California
http://www.mdnautical.com/papercharts.htm
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M_Man
Junior Nomad
Posts: 60
Registered: 8-22-2003
Location: Truckee, CA
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Gregg means GPS/Chartplotter.
The GPS puts you on an electronic chart.
I use C-MAP chartography with a Standard Horizon CP155C
Here's the chip's Chart List:
http://chartcatalogue.c-map.no/chartlisting_plus.asp?crtrID=...
This is a Max/Wide Chart Chip, you can get smaller chips that cover less area burned to order from: http://www.waypoints.com/
Charlies Charts are good, but you can update the electronic charts every other year or so for a few bucks.
You can even Rent C-MAP Charts when you are in a new area, or buy used.
The truly frugal can get a compatable used chip from eBay, and get it updated...ends up costing less than half of new, but remember only a fool
relies on old charts on moving waters (yes, I mean Tides!)
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Hook
Elite Nomad
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M-Man, have you actually taken your chartplotter to Mexico yet. I think you will be surprised at the inaccuracies.
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Sharksbaja
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Location: Newport, Mulege B.C.S.
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Watch out for that rock!!
DON\'T SQUINT! Give yer eyes a break!
Try holding down [control] key and toggle the [+ and -] keys
Viva Mulege!
Nomads\' Sunsets
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M_Man
Junior Nomad
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Hook, I'm going in October to BCS, I'll let you know!
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JZ
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| Quote: | Originally posted by M_Man
but remember only a fool relies on old charts on moving waters (yes, I mean Tides!) |
Well, I think you'll be surprised then that your C-MAP's for the SOC are based on Mexican charts from 1870 something. They are off by 1.5+ miles in
some areas. This is what Hook was trying to tell you. Your C-MAP charts can only be used as a reference.
Gerry Cunningham's charts and guide books are about the most accurate source of info you will find for the SOC.
[Edited on 5-30-2007 by JZ]
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M_Man
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Location: Truckee, CA
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I've heard about the big-time errors on the SOC.
I looked up Gerry's Chartguides the other day...I've got his 10 year old Paddle Charts for the Northern Cortez...I was dissapointed to see that
they're no longer available as they had handy details missing from the Fish'n'Maps and Baja Directions Maps like the location of fresh water, good
haulout beaches and current info.
Seems to me that I read somewhere on the 'net about a half mile error for Roca Montana off Isla Cerralvo, shouldn't be too much trouble to find it
with the plotter and sounder...set a waypoint, label it and fish!
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Hook
Elite Nomad
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Registered: 3-13-2004
Location: Sonora
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M, my point was to the relative accuracy of the GPS charts to the paper ones...........both highly inaccurate in places, in relation to the shoreline.
I cant really speak to the bathymetric info on either although I like the FnM charts better. Much easier to read that the BD maps. Like the smaller
scale inserts, too.
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M_Man
Junior Nomad
Posts: 60
Registered: 8-22-2003
Location: Truckee, CA
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The only way charts get updated is by input from mariners...I can't speak to the mexican chart service, but I'll be reporting my findings to C-MAP and
enquire what they do with the data.
Love your signature, Fagan's best album ever.
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