VOR Leg 2 Lisbon to Cape Town

[mad]

Mad I know you disagree, but I reakon Hayles is going to have shot at the slot. 

Wait and see I guess, if it was going to be any team to take a flier, it'll be these guys. 

 

[SemiSalt]

The tracker uses the "closest to the finish" rule to determine who is ahead at any particular time, and as we have seen, this leads to odd situations. As I write, Brunel is crossing some distance ahead of TToP,  but is listed as behind. 

So the question is: what is the better way when the optimum course is far from the great circle course?

 

[stief]

The tracker uses the "closest to the finish" rule to determine who is ahead at any particular time, and as we have seen, this leads to odd situations. As I write, Brunel is crossing some distance ahead of TToP,  but is listed as behind. 

So the question is: what is the better way when the optimum course is far from the great circle course?

"closest to the finish via the next virtual waypoint rule" works well enough for tackers and gybers, but agree that a better calculation would be appreciated. The Virtual Eye system works well enough to see who is 'ahead' when on opposite tacks, as seen in the in-port racing, so maybe the equivalent system could be used on trackers.

So, the Virtual Eye system which constantly updates rankings seems better.

FWIW, the Report on 06/11/2017 at 16:24:00 UTC gave us the anomaly of SHKS measured against one waypoint, and the others via the Dakar waypoint. 

Position Team  Hour UTC Waypoint


1


Team Sun Hung Kai / Scallywag


16:17 UTC


Cabo Blanco 1


2


Dongfeng Race Team


16:18 UTC


Dakar


3


MAPFRE


16:18 UTC


Dakar


4


Team AkzoNobel


16:18 UTC


Dakar


5


Vestas 11th Hour Racing


16:18 UTC


Dakar


6


Turn The Tide on Plastic


16:18 UTC


Dakar


7


Team Brunel


16:18 UTC


Dakar

 

[mad]

The optimum Course would be along the white rhumb line you see on the Tracker. But that would leave you in a much, much, much more difficult lane to cross the Doldrums after the Cape Vert Islands so everyone trying to go west as fast as they can for a much more moderate and easier Doldrum crossing.

Well done from planet obvious. 

 

[4pines]

Seems like Volvo could put a "virtual waypoint" on the tracker for these types of legs just to give us a better sense of gains and loses...

 

[mad]

Seems like Volvo could put a "virtual waypoint" on the tracker for these types of legs just to give us a better sense of gains and loses...

What's the point if they don't have to round the waypoint? 

Has this thread become a competition for the stupid?  

 

[Miffy]

The tracker uses the "closest to the finish" rule to determine who is ahead at any particular time, and as we have seen, this leads to odd situations. As I write, Brunel is crossing some distance ahead of TToP,  but is listed as behind. 

So the question is: what is the better way when the optimum course is far from the great circle course?

No. 

the finish is the finish and there's no way to determine this far out with so much uncertainty in weather and current forecasts 2 weeks out whether someone is in the lead when they're all within 4 hours reach of each other. 

Artificial waypoints will be just illusions to help the nervous instant gratification types who bother with moment in time speed reading to fidget some fake notion when they can really just look at 4hr/12hr/24hr distances, weather and get a sense of what the boats are trying to achieve. 

 

[4pines]

No. 

the finish is the finish and there's no way to determine this far out with so much uncertainty in weather and current forecasts 2 weeks out whether someone is in the lead when they're all within 4 hours reach of each other. 

Artificial waypoints will be just illusions to help the nervous instant gratification types who bother with moment in time speed reading to fidget some fake notion when they can really just look at 4hr/12hr/24hr distances, weather and get a sense of what the boats are trying to achieve. 

I am probably being an idiot, but is the 4hr/12hr/24hr distances available on the tracker and I just can't find or do I need to get an email with that info?

 

[stief]

What's the point if they don't have to round the waypoint? 

Has this thread become a competition for the stupid?  

QED. 

Still, seeing the virtual waypoint plotted tells us the basis of the VMG readings.

 

[Sailbydate]

Raw content is beautiful.

http://www.volvooceanrace.com/en/raw/1476.html

Great to see PB getting wheel time. 

 

[mad]

I am probably being an idiot, 

No probably about it, you are 

 

[mad]

QED. 

Still, seeing the virtual waypoint plotted tells us the basis of the VMG readings.

The next waypoint is whichever marker they are using just outside Cape Town. 

 

[4pines]

No probably about it, you are 

That's helpful.... You realize that sitting here on my phone looking at Gain/loss with a snap shot of angle/speed of these boats makes it a tad challenging to get a gauge on who is making real progress and what not...

 

[Hydrogene]

Freely available data.

http://yb.tl/Links/VOR2017

You only need the software to project it.

Google Earth would also be useful

The link doesn't work anymore on my side... It's empty. Do you have the direct link for the Google Earth KML file? Thanks again anyway!

 

[stief]

I am probably being an idiot, but is the 4hr/12hr/24hr distances available on the tracker and I just can't find or do I need to get an email with that info?

they used to be on the Dashboard but now not even in the emailed spreadsheet, nor the Chrome plug-in.

Once there's a chance of someone setting a 24 hr record, maybe we'll see that stat somewhere. 

 

[southerncross]

Great to see PB getting wheel time. 

Good to see you're still around.

Here's a shot of Scally passing the island.

http://www.volvooceanrace.com/en/raw/1498.html

 

[southerncross]

they used to be on the Dashboard but now not even in the emailed spreadsheet, nor the Chrome plug-in.

Once there's a chance of someone setting a 24 hr record, maybe we'll see that stat somewhere. 

Do you think they frown on any effort to circumnavigate the tracker?

 

[stief]

The next waypoint is whichever marker they are using just outside Cape Town. 

They use several. After their Puero Blanc1, then Dakar, the third one shows in the Live. At 10:16 or thereabouts in  https://www.youtube.com/watch?v=_XRtQYOeq2s

 

[southerncross]

Is Azko splitting off?  AIS update anyone?  

 

[stief]

Do you think they frown on any effort to circumnavigate the tracker?

I hoped not, dreading a repeat of the Vendee tracker kerfuffle. With the media streams opening up, I'd hoped Mark Turner would have also opened up the data. Don't know why the telemetry needs to be so restricted for a one-design fleet.

Guess data is the new oil, and the efforts to monopolize too attractive to many business models. I was sorry to see Navionics sold to Garmin. Their open data made many trackers better. Wonder how long that will last.