Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 03-04-2011, 02:53   #1
Registered User

Join Date: Mar 2011
Posts: 7
UGrib v Poseidon System

Which one's the most accurate for the Cyclades ?

Brettsan is offline   Reply With Quote
Old 03-04-2011, 04:39   #2
Registered User
Franziska's Avatar

Join Date: Mar 2011
Location: Harlingen, The Netherlands
Boat: Woods Mira 35 Catamaran
Posts: 805
Re: UGrib v Poseidon System

They are different ;-)

In 2004 I found Poseidon a very good tool. But, it is a website, which means you need full web access to view it.
Being local from the Greek, I'd think it is very accurate. As far as I recall it also gives wave data, which is helpful when cruising with a smaller boat.

UGrib in turn is a program you install on a PC and use it to watch GRIB Data you downloaded in form of very small files from the web.

I tested several GRIB file viewers, my preferred free one is:


Grib files come from several locations, a good one is:

FREE GRIB Files | Marine Weather Charts | Global Marine Networks

Where you can send a very short coded email to and receive the required GRIB automatically back.
Remember, you do not need to buy a program to use these files. Zygrib handels them well.
If I where you, I'd use Poseidon if I am in an Internet cafe or have full web access, or if I require more info than from the GRIB.
When on board I'd use Zygrib.

Happy cruising,


Franziska is offline   Reply With Quote
Old 03-04-2011, 06:07   #3
Moderator Emeritus
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 32,203
Images: 240
Re: UGrib v Poseidon System

Greetings and welcome aboard the CF, Brettsan.
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 03-04-2011, 12:17   #4
Registered User

Join Date: Feb 2010
Location: Corsica (France)
Boat: Bavaria 37
Posts: 239
Re: UGrib v Poseidon System

Hi !
I agree with Franziska for the essential... But, with a preference for Poseidon that is, to my opinion, more precise concerning the local phenomenas, for example, the straits between 2 islands or the effect of the altitude of the islands on the wind on the opposite side....
In fact, if you have a 3 G USB connection (Vodaphone or Wind : prepaid system) you will have internet connections quite everywhere in the Aegean and so Poseidon or Passagewhether or the official Greek meteo ...
Jacques2 is offline   Reply With Quote

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
Block system for a new dinghy davit system landonshaw Auxiliary Equipment & Dinghy 3 27-03-2011 07:32 ? imagine2frolic Seamanship & Boat Handling 10 22-10-2010 11:07
Ugrib wind program skipgundlach Marine Electronics 1 08-12-2008 19:11

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 20:01.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.