Best routing information - Page 2 - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > Skills and Seamanship > Seamanship & Navigation
 Not a Member? 

Seamanship & Navigation Forum devoted to seamanship and navigation topics, including paper and electronic charting tools.


Like Tree7Likes
Reply
 
LinkBack Thread Tools
  #11  
Old 01-10-2012
jackdale's Avatar
Senior Member
 
Join Date: Dec 2008
Location: Calgary, AB, Canada
Posts: 8,966
Thanks: 27
Thanked 54 Times in 51 Posts
Rep Power: 7
jackdale will become famous soon enough
For passage planning I use the following as well.

NOAA weather fax

GRIB files

Both are available from Internet, but offshore weatherfax can be accessed via SSB > Modem > laptop and GRIB files can be accessed via email either SSB or Sat Phone. GRIB readers run the whole gamut of cost from free (UGRIB) to expensive (Expedition)

Get familiar with them at home online.

I use the North East Pacific weather fax

Northeast Pacific WX Briefing Package

For Internet based GRIB files I use UGRIB

www.ugrib.us


For email based GRIB files see Requesting grib files from Saildocs (2010-07-08)

I also have a slew of Android apps that I use for weather.

Also if you are going to cross the Gulf Stream, you may wish to use a routing service.

There are also weather routing services both free and for fee available.
__________________
__________________
ISPA Yachtmaster Offshore Instructor Evaluator
Sail Canada Advanced Cruising Instructor
IYT Yachtmaster Coastal Instructor
ASA 201, 203, 204, 205, 206, 214
As I sail, I praise God, and care not. (Luke Foxe)
Reply With Quote Quick reply to this message Share with Facebook
  #12  
Old 01-11-2012
speciald's Avatar
Special Delivery
 
Join Date: Mar 2007
Location: live on boat
Posts: 661
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
speciald is on a distinguished road
Send a message via Skype™ to speciald
I use the MaxSea weather routing application. Grib files, polars of your boat, what the projected weather are are all used to produce a sailing route. The Gribs can be downloaded from their website enroute to update the routing underway. It has worked very well for me in passages to and from the Caribbean in the last 7 years. It is an expensive program, unfortunately, but works. It is also part of the Furuno Nav-net system.
Reply With Quote Quick reply to this message Share with Facebook
  #13  
Old 01-11-2012
Bristol 45.5 - AiniA
 
Join Date: May 2006
Posts: 3,618
Thanks: 5
Thanked 87 Times in 75 Posts
Rep Power: 9
killarney_sailor is on a distinguished road
Them, rather than it

Quote:
Originally Posted by davidpm View Post
Well I've downloaded it not trying to figure out how to get it big enough to read.
Note that the pilot charts are monthly by ocean basin so you might need to dowload several. Also Cornell's book is a compilation of data from many sources including pilot charts. It is certainly the pre-eminent data source for planning passages. When we recently planned our trip from Oz to North America, it was a matter of we have to be here (for us South Africa) at a certain time and that means we have x weeks to get from here to there. There is a reason that people going to various parts of the world all go at pretty much the same time - and why another time might be quite dangerous.

A semi-politcal comment about Cornell's book. We buddy-boated with friends from Florida all the way to Oz, with several times when we went different places. We each started with a new Cornell. When I bought mine in Toronto I did not know, and the bookseller did not say, that there was a new edition out so I had one edition older. By the time we go to Brisbane, John's binding was falling apart and mine was still in almost new condition. The new edition is printed and bound in China, while my older one was done in the US. It is sad when we get crappy quality and people here lose jobs. I would bet the difference in price would be less than $5.
__________________
Back in the water in Grenada - with new main and #2 and cockpit canvas (Santa came early). Will spend the winter and early spring in the Caribbean and then head to Bermuda and the northeast US. Still trying to decide if we will bring the boat to Canada, either in 2015 or 2016.
Reply With Quote Quick reply to this message Share with Facebook
  #14  
Old 01-11-2012
casey1999's Avatar
Senior Member
 
Join Date: Oct 2010
Location: HI
Posts: 3,030
Thanks: 11
Thanked 32 Times in 31 Posts
Rep Power: 5
casey1999 is on a distinguished road
Can someone explain how the Grib files are produced? I understand the files are all computer generated but what is the input? Do they use a satelite to get the input information? And what is the input information? If it is say Barometric pressure, how does a satelite measure barometric pressure?
Regards
Reply With Quote Quick reply to this message Share with Facebook
  #15  
Old 01-11-2012
jackdale's Avatar
Senior Member
 
Join Date: Dec 2008
Location: Calgary, AB, Canada
Posts: 8,966
Thanks: 27
Thanked 54 Times in 51 Posts
Rep Power: 7
jackdale will become famous soon enough
Quote:
Originally Posted by casey1999 View Post
Can someone explain how the Grib files are produced? I understand the files are all computer generated but what is the input? Do they use a satelite to get the input information? And what is the input information? If it is say Barometric pressure, how does a satelite measure barometric pressure?
Regards
Here is the technical answer - http://www.wmo.int/pages/prog/www/WD...-binary-2.html
__________________
__________________
ISPA Yachtmaster Offshore Instructor Evaluator
Sail Canada Advanced Cruising Instructor
IYT Yachtmaster Coastal Instructor
ASA 201, 203, 204, 205, 206, 214
As I sail, I praise God, and care not. (Luke Foxe)

Last edited by jackdale; 02-02-2012 at 11:28 PM.
Reply With Quote Quick reply to this message Share with Facebook
  #16  
Old 02-02-2012
jimmalkin's Avatar
Senior Member
 
Join Date: Jun 2004
Location: MVY
Posts: 232
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
jimmalkin is on a distinguished road
All above are perfectly appropriate direction to get your answers - I can only add buoyweather.com (sign up for a trial) is a great single source for forecasting that combines information from the usual multitude of weather prediction and ocean activity sources and puts them together allowing you to get lat/long specific forecasts for any given location.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

White Rabbit
Vineyard Haven
Reply With Quote Quick reply to this message Share with Facebook
  #17  
Old 02-03-2012
SVAuspicious's Avatar
Mermaid Hunter
 
Join Date: Oct 2006
Location: on the boat - Chesapeake
Posts: 3,681
Thanks: 0
Thanked 132 Times in 117 Posts
Rep Power: 9
SVAuspicious will become famous soon enough
I use a software tool named Visual Passage Planner. VPP has the current pilot chart data by month. If you punch in the polars for your boat it will give quite reliable predicted passage duration estimates.

Jimmy Cornell has just announced a global package of updated pilot charts. See Noonsite for links.
__________________
sail fast and eat well, dave
S/V Auspicious
AuspiciousWorks.com
beware "cut and paste" sailors.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #18  
Old 02-06-2012
casey1999's Avatar
Senior Member
 
Join Date: Oct 2010
Location: HI
Posts: 3,030
Thanks: 11
Thanked 32 Times in 31 Posts
Rep Power: 5
casey1999 is on a distinguished road
Quote:
Originally Posted by jackdale View Post
Here is the technical answer - Guide to GRIB
I read through the link and still do not understand what data is being used to gernerate the grib chart. It seems that direct measurements of wind and waves is not the primary means to generate the chart. It seems satelites are used to measure maybe wind, waves, and barometric pressure. But how does a satelite measure these?
Reply With Quote Quick reply to this message Share with Facebook
  #19  
Old 02-06-2012
SVAuspicious's Avatar
Mermaid Hunter
 
Join Date: Oct 2006
Location: on the boat - Chesapeake
Posts: 3,681
Thanks: 0
Thanked 132 Times in 117 Posts
Rep Power: 9
SVAuspicious will become famous soon enough
GRiBs are evil.
__________________
sail fast and eat well, dave
S/V Auspicious
AuspiciousWorks.com
beware "cut and paste" sailors.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #20  
Old 02-06-2012
jackdale's Avatar
Senior Member
 
Join Date: Dec 2008
Location: Calgary, AB, Canada
Posts: 8,966
Thanks: 27
Thanked 54 Times in 51 Posts
Rep Power: 7
jackdale will become famous soon enough
Quote:
Originally Posted by SVAuspicious View Post
GRiBs are evil.
Because?

I sense that that they are more usual offshore as they do not seem to factor in land and sea breezes especially well. I also like the weatherfax, but will use all tools available to me before heading out into bluewater.
__________________
__________________
ISPA Yachtmaster Offshore Instructor Evaluator
Sail Canada Advanced Cruising Instructor
IYT Yachtmaster Coastal Instructor
ASA 201, 203, 204, 205, 206, 214
As I sail, I praise God, and care not. (Luke Foxe)
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Texas to Venezuela Routing gypsysailing Cruising & Liveaboard Forum 12 01-22-2009 01:50 AM
Jib Sheet Routing Waugh Gear & Maintenance 14 05-20-2008 03:57 PM
VHF Antenna/coax routing goose327 Gear & Maintenance 15 03-02-2007 12:30 AM
coax routing question rb Gear & Maintenance 3 03-15-2006 07:51 PM
Routing Advice Sue & Larry Cruising Articles 0 07-13-2001 09:00 PM


All times are GMT -4. The time now is 11:54 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.