Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 05-08-2016, 10:09   #1
Registered User

Join Date: Aug 2016
Posts: 1
Sea of Cortez Nav

Does anyone know what the best program is for the GO7 Simrad for Cruising in the Sea of Cortez? Trying to decide between C-Map and Navionics.....In the past I have not been pleased with Navionics in the Sea of Cortez...Curious to know if C-Map has been successful for anyone... Thanks
__________________

__________________
djstude is offline   Reply With Quote
Old 05-08-2016, 11:40   #2
Senior Cruiser
 
mikereed100's Avatar

Cruisers Forum Supporter

Join Date: Dec 2005
Location: Santa Barbara
Boat: 46' custom cat
Posts: 1,571
Images: 2
Re: Sea of Cortez Nav

Both will likely be disappointing. I use OpenCPN with cm93 charts, which are fairly useless outside of La Paz. I have supplemented this with charts made from Google Earth using GE2Kap on OpenCPN. This is time consuming, but the charts are dead-on. Used in conjunction with Shawn and Heather's guide for depth this is all you need. You must still be careful to use the electronic or paper charts to mark reefs and small islands that do not show up on GE.
__________________

__________________
Mike

www.sailblogs.com/member/rumdoxy

Come to the dark side. We have cookies.
mikereed100 is offline   Reply With Quote
Old 05-08-2016, 14:16   #3
Registered User
 
Viking Sailor's Avatar

Join Date: Nov 2006
Location: San Francisco Bay
Boat: Fantasia 35 - s/v Feeling Good
Posts: 1,074
Re: Sea of Cortez Nav

OpenCPN allows you to correct the CM93 ed2 charts datum. This allows you to move Mexico charts to match the received GPS positions.
__________________
Viking Sailor is offline   Reply With Quote
Old 05-08-2016, 14:27   #4
Senior Cruiser
 
mikereed100's Avatar

Cruisers Forum Supporter

Join Date: Dec 2005
Location: Santa Barbara
Boat: 46' custom cat
Posts: 1,571
Images: 2
Re: Sea of Cortez Nav

Quote:
Originally Posted by Viking Sailor View Post
OpenCPN allows you to correct the CM93 ed2 charts datum. This allows you to move Mexico charts to match the received GPS positions.
That is useful but unfortunately, even when corrected, they still lack useful detail for anything other than passage making. The problem being that there are no detailed paper charts for Mexico that electronic charts can be drawn from. Luckily, using GE2Kap we can make our own charts with as much detail as we want.

The aforementioned Shawn and Heather offer digital charts for most of the more popular anchorages with soundings that are very useful. If you have their guidebook, it contains the same chartlets so you don't really need the electronic charts, although they are nice to have. We usually enter anchorages with OpenCPN and GE2Kap running on the laptop and Shawn and Heathers chart on the Ipad.
__________________
Mike

www.sailblogs.com/member/rumdoxy

Come to the dark side. We have cookies.
mikereed100 is offline   Reply With Quote
Old 05-08-2016, 15:26   #5
Registered User
 
Viking Sailor's Avatar

Join Date: Nov 2006
Location: San Francisco Bay
Boat: Fantasia 35 - s/v Feeling Good
Posts: 1,074
Re: Sea of Cortez Nav

Quote:
Originally Posted by mikereed100 View Post
That is useful but unfortunately, even when corrected, they still lack useful detail for anything other than passage making. The problem being that there are no detailed paper charts for Mexico that electronic charts can be drawn from. Luckily, using GE2Kap we can make our own charts with as much detail as we want.

The aforementioned Shawn and Heather offer digital charts for most of the more popular anchorages with soundings that are very useful. If you have their guidebook, it contains the same chartlets so you don't really need the electronic charts, although they are nice to have. We usually enter anchorages with OpenCPN and GE2Kap running on the laptop and Shawn and Heathers chart on the Ipad.
Funny! When I enter an anchorage I use my eyes and brain to see and figure out how and where to park the boat. The last thing I need to be doing is fixating on a chart (electronic or otherwise).
__________________
Viking Sailor is offline   Reply With Quote
Old 05-08-2016, 15:27   #6
Registered User

Join Date: Jan 2008
Location: SF Bay Area (Boat in La Paz)
Boat: Valiant V40
Posts: 432
Re: Sea of Cortez Nav

None are great. CMAP ok at the harbor level where available. Navionics ditto. Otherwise Sean and Heather your best bet, either hard or electronic.
__________________
jamhass is offline   Reply With Quote
Old 06-08-2016, 09:48   #7
Registered User

Join Date: Apr 2016
Posts: 16
Re: Sea of Cortez Nav

Ahoy,

I've sailed out of La Paz and grounds North to Loreto a couple of times. I agree with Mike in using Paper Charts and regular depth soundings as even the charts were off a bit here and there due to shoal movement, (plus the charts are missing a few rock outcroppings).

Old school, Charts, Depth and a sharp eye!

You'll be fine!

Cheers,

Captd
__________________
Captdd is offline   Reply With Quote
Old 06-08-2016, 15:08   #8
Registered User

Join Date: Dec 2012
Location: Oregon/Mexico
Boat: Morgan 37 OI MkII
Posts: 27
Re: Sea of Cortez Nav

I would agree with captdd with the caveat to use charts as only very general reference. We have been sailing this area for 19 years and trust our depth soundings and eyes primarily for anchoring. Hurricanes and tropical storms do change Sea of Cortez anchorages; usually, not dramatically, but you might find your charts and chartlets with errors regarding local conditions.
__________________
iseadreamer is offline   Reply With Quote
Old 06-08-2016, 19:42   #9
Marine Service Provider

Join Date: Sep 2012
Location: Virgin Islands
Boat: 1999 Leopard 45, 45 foot cat, 1980 Hunter 33, 33 foot monohull
Posts: 405
Re: Sea of Cortez Nav

Cruised the Sea of Cortez for 13 years (1991-2004) with a simple GPS (pre plotter days), radar, and various cruising guides such as Charlie's Charts, the book by John and Patricia Raines, Gerry Cunningham's stuff and a 40 year old cruising guide that gave a wonderful take on the Sea of Cortez before very many people had been there or much stuff had been built.

Like all navigation, it was interesting, but certainly not really challenging. Wonderful place. Electronics can make our cruising more complicated, not less, at times. Our eyes almost always make it simpler, however.
__________________
contrail is offline   Reply With Quote
Old 07-08-2016, 05:44   #10
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,571
Images: 240
Re: Sea of Cortez Nav

Greetings and welcome aboard the CF, djstude.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 07-08-2016, 10:40   #11
Registered User

Join Date: Jun 2016
Location: Quadra Island
Boat: Catalina 42 Mk1
Posts: 7
Re: Sea of Cortez Nav

Spent last winter in the Sea of Cortez with Navionics on the I-pad. It's true,
some of the islands are just not where they should be according to the charts. Even my Ais had me on the wrong side of an island a couple of times. Charts are good, but not if you can't trust them on a moonless night
while passing close to land. Paper charts, and the books mentioned above are
still essential.
__________________

__________________
atkinsoa is offline   Reply With Quote
Reply

Tags
sea of cortez

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Mexico/Sea Shepherd align to protect rare Sea of Cortez porpoise SV Sailfish Cruising News & Events 15 11-11-2017 20:09
Sea of Cortez - places to see Redbull addict Pacific & South China Sea 28 12-04-2007 13:44
West Coast Mexico - Sea of Cortez Terry Fallis Pacific & South China Sea 7 09-12-2006 15:25
Sea of Cortez Weather Terry Fallis General Sailing Forum 6 08-11-2006 10:06
Sea of Cortez Regional Forum dcmeigs Forum Tech Support & Site Help 1 24-02-2003 14:08



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:10.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.