Post by iconPost by Juanlumi | 2014-10-23 | 13:51:48

Hi, I am a rookie in sail.zero and in this forum.
The vast majority of the time i've noticed that the heading of the boat and TWA do not match
The program tells me a course and also a number in brackets (TWA).
When I go to my ship and set the direction indicated, there is always an error of one or two degrees from the TWA
Is this normal? The angle in brackets TWA is approximated?
What should I do if the heading or TWA?
What value is more correct, the heading or the TWA?
Than you all.
Greetings

commenticon 5 Comments
Post by iconPost by GeorgeBest | 2014-10-23 | 14:21:20
Use TWA when you want your boat to always have the same angle with the wind. This can mean that your boat will adapt it's heading when it wants to stay at the same angle with the wind. There are times that the TWA option makes sense. When on a long stretch the windangle slowly changes and you want to keep the same angle and not change the heading of your boat every two hours (nights) you could use TWA.
Post by iconPost by zezo | 2014-10-23 | 17:12:22
One typical case of using fixed TWA is when going up/downwind. There is a optimum angle which results in best progress, called VMG (velocity made good)

Unfortunately the best angle changes with wind speed and you have to adjust accordingly - you can use the game scheduler with both fixed heading and fixed TWA.
Post by iconPost by Juanlumi | 2014-10-23 | 23:41:32
Thanks for your answer, they are very accurate, but to mantein the TWA I have to have purchased options and I do not have them,. In that case should I trust more, in order to pilot the ship? in the course or TWA?
They are not equals in the VOR program.
Post by iconPost by redcobra | 2014-10-30 | 13:46:25
Another question regarding the TWA feature: what is the difference between the red and the blue line? Thanks
Post by iconPost by zezo | 2014-10-30 | 14:47:37
They are the loxodrome (rhumb line) and orthodrome (great circle)

You get the former by sailing at fixed heading, and the latter by sailing towards fixed destination.
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VR, Zezo, Qtvlm card offsets
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Island's coordinates
34
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Tara Ocean 4
6
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Solo Maitre Coq
21
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Adjustable timeshift ?
3
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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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