Post by iconPost by Boatdrinks_1 | 2017-12-15 | 15:24:55

VR displays the rhumb line for a given course. However the VR map is 2 dimensional not 3 dimensional. Does VR take this into account making the rhumb line truly the shortest course?

commenticon 7 Comments
Post by iconPost by toxcct | 2017-12-15 | 15:30:25
No, the line VR displays is not the actual rhumb line, and they say so in the FAQ...

They only display an informational path from the starting point to the finish line, which respects all kind of constrains like gates, buoys, ice exclusion zone and such...
Post by iconPost by zezo | 2017-12-15 | 16:05:29
Additionally, a "rhumb line" is not the shortest distance between two points.

VR uses Mercator projection where a rhumb line would be a straight line.

Shortest distance is called Orthodromy / Great Circle line. You can get it in the game when placing a waypoint, but for some reason unknown waypoints are limited to 24 hours ahead. Oh, it's not unknown it's called greed.

The orange line in my chart is a great circle line as is the blue dynamic track line. The red line is Loxodromy/Rhimb line - you can see how they diverge in few hours.
Post by iconPost by Peppe | 2017-12-18 | 18:19:09
would it be hard to get the VR line from the client and draw it in zezo?
i Think it would help visualizing things?
Post by iconPost by zezo | 2017-12-18 | 20:47:56
That's interesting idea. The VR line is defined as small list of coordinates that won't be hard to display.
Post by iconPost by Ursus Maritimus | 2017-12-18 | 22:14:41
would be indeed nice to be able to better oriente between VR-client and zezo as there are no coordinates in the VR-client (except your own and other boats)
Post by iconPost by zezo | 2017-12-18 | 22:31:08
I hate fixing VR issues, but can't help it when it increases the usability of both sites.
Post by iconPost by JohnT | 2017-12-19 | 03:41:01
Get's my vote: in the old VR version, it wasn't too hard to compare the VR position @ 24hrs with the one here; now it is really difficult; and the way you indicate would be much, much better than even the old one. And extra useful given the variable synchronization between the winds in the VR client and everything else.
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Summer Cup
13
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new VR penalties
8
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VR Dashboard 3.16
10
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Estimated Record Time on a record race
8
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no updates since yesterday !!
3
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Predicted times color background
3
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polar NY - SF
2
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Can you go around ground based on the ghost boat ?
9
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[Globe 40 (477)] TWA curve differs from navigation dots by about 5°
2
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Global 40 - new Class 40 polars
16
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Globe 40 on credits
4
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olympic race - which route to choose?
52
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Atlantic record bugg zezo Goto Lizard
3
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Figaro 3 Polars Winches
24
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Bit Sailor Router in RealSail
2
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Modification de destination
1
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Silent debugging
14
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How to manage buoys during absence
6
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Vela- route choosen by your mom
6
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VR Team ranking race criteria
1
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No news from Virtual Regatta about VOR (the ocean race).
1
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Log-in VR game marathon..
5
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VR Dashboard
5
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Dashboard - Precdicted Time ATLANTIC RECORD
1
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the prawn star
9
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polars virtual regatta
8
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how to convert Grib files to Grib2?
3
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VSR, XP points
7
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Predicted times
3
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Nord Stream *3*
11
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Game on 12Z, but Zezo still working with 06Z
3
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race wait points
1
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special boats?
7
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VR Dashboard in Firefox?
6
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ESCARGOT CLASS
11
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Los Angeles - Honolulu
26
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Rounding a Buoy
12
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VR Waypoint Heavy Bug Reporting
3
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Time of ending Jules Verne
4
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Shore detection by Zezo
2
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Nord Stream Race 2
7
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Trying to Break the VR Map Mistery !
3
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Navigating to "xxx.0" TWA
26
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Tara4 - no refresh
2
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Jules Verne: Inconsistency of headings and speeds, simulation !!
5
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VR, Zezo, Qtvlm card offsets
2
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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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