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Profile for dtayls



Name dtayls
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Posts29
  • Re: qtVlm thread
    Board » Technical Support
    Interesting. I wasn't aware of the 'selection tool'. I'll have to give it a go.
  • Re: Weather - Brain Storm
    Board » General Discussion
    I agree with you @Zorba that "random factors should come from the weather itself".

    As you know I like the idea of using a different and more accurate model (perhaps ECMWF) for the underlying simulation but that might depend on gaining access to a high quality model to which most users do not have access.

    Another approach might be to introduce a certain degree of randomness in to the simulation's weather model, but what should the source of this randomness be?

    One option would be to choose a random mix of two or more models. This could be (a) fixed for the whole race or (b) change over time or (c) vary by lat&lon across the GRIB or (d) both meaning <x,y,t>.

    If model volatility or uncertainty GRIBs were available then this could also be used to add a little to the randomness model but I suspect many would consider this to be a step too far :-)
  • Re: Weather - Brain Storm
    Board » General Discussion
    While they do indeed say "you will need to accept the terms of the ECMWF Standard licence and pay for the associated data and handling costs." what if that cost was $0 or the equivalent in Euros? I think you will find that their licensing model depends very much on how the data is to be used. The fact that SOL is a not-for-profit, that the data would not be made available for download to end users, and that we would not require 24x7 support might all have a big impact on the quoted price. Maybe someone should contact them and request a quote.

    As it stands in SOL we are given perfect weather information for each 6 hour window which is a little unrealistic. What's more, some people know the idiosyncrasies of how the SOL server interprets the data and are therefore able to use that knowledge to their advantage. Is this really fair? And given that we allow this and the use of routers then we'd might as well allow full autopilot control of our boats!

    If there is instability in in the weather then I would expect the underlying weather to reflect that and probably differ from the predictions. Those who understand the weather the best will generally make the best decisions and may even have a chance at winning over those who can drive the tools to perfection.

    Ideally the underlying weather model used in the SOL simulation is based on the most accurate available. But some people may have access to this unless we 'rule' it out. So maybe we could also introduce some variations in to areas where the model is unstable. Again, this could be fun :-)
  • Re: Weather - Brain Storm
    Board » General Discussion
    VIbex: The key to my idea is to use an underlying weather model for the simulation which powers our virtual boats that is different from the predictions available to SOL competitors.

    I agree when you say "we're not actually living on the boats so you need some measure of predictability" but I don't think that means we need to be able to 100% predict the weather.

    When the weather is very stable and highly predictable then the models will likely be very closely aligned. In those cases it might be safe to sail very close to a mark or an island, but when the weather is less stable you might choose a wider safety margin over absolute performance.

    As for the question of using 'rules' to control which models can or can't be used, there is always going to be someone who wants to cheat.

    Ideally, I like the idea of using something like a pre-release beta version of the ECMWF model not generally available except to researchers, if such a thing exists. Another alternative might be a psuedo-random merge of multiple model GRIBs ... This could be a fun project :-)
  • Re: Weather - Brain Storm
    Board » General Discussion
    Also, they explicitly mention not-for-profits in their license selection guidance so you're just dreaming and there's little point in trying to ask anything from them.
    --
    i.

    Is it possible to get access to the ECMWF model for internal use only on the server while using the GFS model in the gribs provided to users?

    It seems to me that this would fit the licencing requirements for the not-for-profit use of the real-time ECMWF data.

    It would also be closer to reality in that the underlying model used on the server would be different to the forecasts available to users.

    There may also be a need for a new SOL rule that makes it illegal to use commercial paid-for products not available to all users for free.

    I think this would make for some more interesting racing.
  • Re: AGL14 Releases
    Board » Technical Discussion
    14.2.3 doesn't seem to automatically download GRIBs anymore :-(


    Looks like this only affected the Mel-to-Osaka race. Seems to work perfectly in other races. How bizarre!
  • Merge of steering and DC tabs
    Board » General Discussion
    I really like @Zorba's idea of merging the 'steering' and 'DC' tabs. Maybe allow for 8-10 lines of DCs bacause if anyone is using more then they are probably using other tools to generate them.

    It would also help to be able to set an actual time rather than just a delay period.
  • Extended predictors - Suggestion re the hourly indicators
    Board » General Discussion
    Love the new extended predictors. Thanks @ij.

    One small suggestion: Hourly indicators are open circles. Perhaps fill every 6-hourly circle to make a large dot. This would help in interpreting the longer predictors.

    The longer predictors will be really helpful when training up those new to SOL. The curly-whirly patterns can be very instructive.
  • Re: AGL14 Releases
    Board » Technical Discussion
    14.2.3 doesn't seem to automatically download GRIBs anymore :-(

    This might help explain it:

    Exception in thread "Thread-1" java.lang.NullPointerException
    at grib.GribFactory.waitForGrib(GribFactory.java:215)
    at grib.GribFactory.run(GribFactory.java:146)
    at java.base/java.lang.Thread.run(Unknown Source)


    --- Last Edited by dtayls at 2020-09-07 04:30:17 ---
  • Re: Poetry Saved for Posterity
    Board » General Discussion
    Pushing haiku to new limits:

    Laozi *pokes
    bonknhoot
    what the *

Races

Next Race: 00d 00h 00m


Current Races:

Pantaenius Shetland Race 2022 - Leg 2
As always, we don't spend much time in Lerwick, Shetland and after some brief but excellent celebrations we are rapidly heading back to Bergen, Norway, for the second leg of the Pantaenius Shetland Race 2022. The North Sea always provides with some exciting racing and we are sure that this race will be no different!
Race #1581
INFO from brainaid.de
First 40.7 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
RANKING: SYC - SHE
Race starts: Jun 26th 09:00 Registration Open!

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Isla St George Sprint 2022
The Bass Islands, in western Lake Erie, are a mere couple of miles west of the southernmost boundary of Canada. In this 21nm PYOC sprint, we will set off from East Harbor in our RC 44s and leave North Bass Island (historically Isle St. George) to port before quickly returning to East Harbor.
Race #1584
INFOby brainaid.de
RC 44 PARTICULARS
NAM_AWIP WX Updates:
0245 / 0845 / 1445 / 2045
Ranking: SPRQ2 - SPRCH - SUPSOL - SYC
Race starts: Jun 25th 18:00 Registration Open!

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Pantaenius Shetland Race 2022 - Leg 1
Welcome back to outer Korsfjorden, Norway, for the first leg of two in
Pantaenius Shetland Race 2022 from Norway to Shetland. Sailonline is extremely excited to be buddying-up for this amazing series which is a classic that Sailonline has had the honour of presenting to its community for some years now. We will be competing in our ever so exciting First 40.7’s which will in no doubt cater for some exciting racing. We look forward to seeing you at the start line!
Race #1580
INFO from brainaid.de
First 40.7 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
RANKING: SYC - SHE
Race starts: Jun 22nd 08:00 Registration Closed

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Newport Bermuda Race 2022


The 635-mile biennial Newport Bermuda Race is one of the oldest regularly scheduled ocean races, and with the Fastnet Race and the Sydney to Hobart Race, it is one of the three great classic races of the yachting world. Founded in 1906, this the 52nd running of the Bermuda Race can also be participated in online.
Entries are invited for one of the four divisions:
Double-Handed Division:
Jeanneau Sun Fast 3300
St. David's Lighthouse Division:
First 44.7 Asymmetric
Gibbs Hill Lighthouse Division:
Reichel Pugh 64
Finisterre Division:
Delphia 47
Details for each yacht are available in the ‘Particulars’ links below and be sure to register your online choice on the Bermuda Race Online link – there are some fine prizes to be won.
As in real life, you can only sail one boat in one division, so choose your virtual yacht carefully, and because of the unusual (for SOL) 4-division nature of the event, please note results will not count towards ANY Sailonline Rankings.
Race #1568
INFOby brainaid.de
Sun Fast 3300 PARTICULARS
First 44.7 A PARTICULARS
RP 64 PARTICULARS
Delphia 47 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: None
Sponsors:

RACE CLOSE: Saturday,
July 2 at 2300 UTC.
Race starts: Jun 17th 17:00 Registration Closed
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Geraldton to Cape Town 2022
A race in the Southern Indian Ocean is always entertaining, especially in a Riptide 50. Traditionally the course would be West to East, to take advantage of the prevailing winds, but this time the SRC is challenging us to an E-W course, from Geraldton in Western Australia to Cape Town in South Africa. A brief 4800nm!
PRIZE: SMPF
Race #1575
INFO by brainaid.de
Riptide 50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
OCQ2 - OCCH - SUPSOL - SYC
Race starts: Jun 12th 05:00 Registration Closed

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SYC Ranking

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  2. Sailonline Yacht Club Member rafa
  3. Sailonline Yacht Club Member Pit8008
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  6. Sailonline Yacht Club Member FreyjaUSA
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  8. Sailonline Yacht Club Member Satori
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  10. Sailonline Yacht Club Member sassy63

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Series

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