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Technical Q&A » Polar % day/night and optimal » 12/22/2020 8:07 am

nico_sanfe
Replies: 6

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I see that in version 11.6.0 the optimal routing polar% works correctly.
Thanks Nick.

Technical Q&A » Polar % day/night and optimal » 12/12/2020 7:15 am

nico_sanfe
Replies: 6

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Thanks,
what about the second question (routing over % polar? 

Technical Q&A » Polar % day/night and optimal » 12/11/2020 9:08 am

nico_sanfe
Replies: 6

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I saw in the polars the possibility to assign a diffent percentage during day and night: in which way day and night are defined? 
Also, if I assign a certain % to the nav polar and then I do an optimal routing over a range of polar% (P%), I have in the results that only the day polar scan over the different %, while the night is fixed to what I have assigned in the nav polar: is this done on purpose ? Wouldn't be better to scan over % also for the night ?
Thanks Nico
 

General Discussion » Vendee Globe - YB tracking - race name for download » 12/07/2020 10:40 am

nico_sanfe
Replies: 16

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Hi everybody;
I've created a race note for the Antarctic Exclusion Zone (v2). If someone is interested in having it, I am happy to share via email. 

Nico

Technical Q&A » Start times in log file » 9/20/2020 5:28 am

nico_sanfe
Replies: 0

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In the log file there are TimeToLine, Burn, RchTmToLn..
If I use Hold Wind/current in the start, are these times saved in the log based on the hold wind/current or on the real twd/tws/tide/set which are saved in the log ?
 

Suggestions for new features and capabilities » Rolling starts » 8/03/2020 7:16 am

nico_sanfe
Replies: 2

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Hi. 
If I'm correct, there is only the possibility to have a 5min roll contdown.
In training, it happens to do 3/4 min rolling starts.
It would be good to have a "roll button", that if selected, would make the timer rolling. 
Thank,
Nico

Questions about Expedition features » Rotation and acceleration » 3/12/2020 1:01 pm

nico_sanfe
Replies: 5

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Hi Nick, thanks for the explanation.
I know reality is different than a model prediction. 
I used your same approach (prediction vs track) on average typical turn to compare with my computations (btw, I have analyzed  25/30 racing & training port to starboard tacks in prestart, in order to have an idea of average tack). 
Still have not study in deep the brake function. Tomorrow I'll do. 
Living in Italy, now in quarantine due to covid19, we have lot of free time .
Ciao, Nicolò

Questions about Expedition features » Rotation and acceleration » 3/12/2020 8:47 am

nico_sanfe
Replies: 5

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Hi. I use this thread since I have a question about rate of turn calibration, used for the prestart fase. 
Rate of turn units are degrees per second and are a function of boat speed (according to the manual). 
The boat I sailed is a Swan50.

I have analyzed different tacks performed during prestart, with different boat speeds at the beginning of the turn. I have computed the rot in °/s as: the angle we span divided by the time between start & end time of the turn; for 7kn BS at the beginning, I have obtained a rot of 6/7 °/s. 
If I use this value, the predicted turn is way to big. I have used the playback mode, to compare prediction vs reality.
A good rot is 16, in order to have reality and prediction similar. 
Am I missing something in my approach ? 
Is there a "mathematical/statistical" approach to compute rot for the start turn ?

I hope to have explained my question.
Thanks,
Nicolò

Suggestions for new features and capabilities » Routes area/regatta folder » 10/31/2019 6:42 am

nico_sanfe
Replies: 2

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Thank you very much Joe! I didn't know about this feature before. 
This solves my request. 

Nicolò

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