Post by iconPost by BennyLava | 2009-08-14 | 16:49:50

Cvetan: don't know if were aware of it but yesterdays wind change was considerably different to the one forecasted. The big band of low winds did not materialize and was much smaller then forecasted and favored the leader group and the pack that stalked them.

My question is: which forecast did you use? Was that the same as the website? Is there a way to avoid the above to happen?

I saw the leadergroup heading that area and based on the 2 day track simulation I decided to head West, unfortunately losing aprox. 3000 places by that.

I saw a member of this forum (TSIONA) who was also heading West and losing many places. He/she is usually in the top 100 if I remember. May he/she can shine some light on this.

As said before this leg your program was far from effective and I wonder what the reason was for that.

Having said that it was pretty effective for the Fastnet, kuddos for that!

commenticon 1 Comment
Post by iconPost by zezo | 2009-08-14 | 17:20:33
I think that this time we got some bad luck with the weather systems. I did not follow the forecasts very close, but have noticed the 'problem'.

Common wisdom also tells us that in unstable conditions it's best to go directly for the great circle route, but the optimizer is not aware of that. I think that this was the case yesterday.

Such is life. The optimizer is reliable with good forecasts, and the GFS does very well in stable weather conditions with strong winds, but is extremely unreliable when the forecast calls for 3ms VRB. I've seen that kind of 'failure' few times.

First time was during the VOR just before Rio. There were patches of wind here and there and it was sheer luck to get in the correct square.

Another time was crossing the Alps during the TDF. A lot of players fell for the forecast for stronger winds to the East not thinking that West wind should be stronger West of the mountains, and they were not using the site (it suggested the Eastern route for a while too). I did not follow its advice and got to 2nd place.
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gate crossing question
7
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Expanded View on PC
3
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Panic at VR Nord
7
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Delays during the sail changes, or directions changes
3
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(Game wind = Zezo wind ) ⍯ (Grib winds = Windy.com)
7
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VR ending the ELO ranking.
34
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NMEA feed
128
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Dashboard Map Track Label not including the segment.tag
5
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VR ingame time
6
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VIRTUAL REGATTA and Phillip Ganier. Worst and worst every day...
7
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beta.realsail.net
2
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Escort Frigate
6
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Out of memory. If you are the developer of this content ....
17
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Question about GFS Grib
5
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RORC Caribbean 600
14
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sliding VSR
16
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Trying to use Zezo to select best combination of sails to select
7
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TARA OCEAN 3
9
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RORC Transatlantique Race
6
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Game appears stuck on 00Z weather from yesterday
4
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Sydney to Auckland
28
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Personal Message pages deleted
7
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New zezo fonction
2
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VR Ranking 2021
7
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Autosail malfunction
3
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Comments from a newbie to "long term" routing
1
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Massive thanks to Cvetan
7
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Fleet section mode record not working
2
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Possible routes on the Map tab
3
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Purple skippers on VR Dashboard
3
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UTC or CET time ?
2
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multiple routes?
2
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Real Sail
4
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Map a little gloomy
8
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Trophée Jules Verne - Route à l'envers ?
2
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Looks like weather updates offline for next 18h
26
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Bring the good old days back
7
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All.grib 0.0k ?
9
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different speed
3
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Strange 0.5 mille VR Scale
3
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Just an idea for a new feature...
7
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Connexion impossible
1
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Donations
7
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New leader - seems to be using Zezo
38
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Bravo Zezo
4
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zezo : Huge job - Huge thx
2
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Difference between boat speed display on VR, dashboard and polar curves
7
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Vendée Globe: Track lines falling too short of ischrones
8
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Tara Ocean
29
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VR winds currently not up to date ?
1
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"Sails Change" within the Programming
3
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RORC Transat finish moved to Antigua
3
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Weather update not appearing...
19
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Dashboard not updating.
6
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Boats Skins Vendée Globe
3
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Safari on iOS: Bearing lines gone
3
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Wrong coordinates in zezo
2
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Winds in the chart do not show changes between 78 hours and 114 hours forecast
2
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Decoding of All grib
6
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I CANNOT ENTER FOR 3 HOURS IN THE GAME
23
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Why the vc data is yellow underlined ?
3
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Jules Verne 2020 - "Start NOW" discrepancy VS real time
7
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Would like to know the reasenable time to update your pisition on zezo
16
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Arrival Vendée Globe in Normandy !!?
4
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MIssing the Obvious: How to get Zezo routes back into VR
2
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VG 2020-01-02 has Zezo a problem with geographic or ...
8
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How to retrieve a waypoint (TWA/HDG) that already passed...
16
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Track duration window
3
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Ways to bypass the client to give orders?
6
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Problem to Load zero route in windy.com
40
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French tutorial for zezo
4
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boat positioning
2
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Export routes in GPX format ?
4
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Sail selection issue ?
11
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Your friends boats in Google Earth
2
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Delay in Wind update ?N
1
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VR Dashboard
54
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