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Profile for kroppyer



Name kroppyer
Email Address info@kroppyer.nl
Website URLhttp://sol.kroppyer.nl
AvatarUsers avatar
Posts324
  • Re: SWR 17/18 Leg 7 - Auckland to Itajai
    Board » Technical Support
    An in-race message was placed on 2018-04-07 at 05:10:30 UTC to announce that the race would be closed on Thursday, 12 April at 23:00 UTC.

    The race closed on 2018-04-12 at 23:00:01 UTC.

    I'm sorry you were unable to finish your race. We try to give everyone a chance to finish before closing the race, but there are always some people unable to make the finish in time, often because they started at a later date. We cannot keep all races open unnecessarily long, but we can often postpone a race close be a day, maybe two when asked. Next time when you see the message announcing the date and time the race will close, and you think you won't make the finish, you can send us an e-mail (admin@ ... ) asking for an extension.

    Unfortunately we cannot re-open races, so yes, the race is gone with the wind, except for the rankings and the good memories :)
  • Re: Chrome browser to tag non-HTTPS sites.
    Board » General Discussion
    As far as I understand, they will put "not secure" in the address bar, nothing that will interfere normal browsing.
  • Re: Polars
    Board » Technical Discussion
    It is a collection that grows over the years. There are multiple ways we create polars. Sometimes there is enough data online to create reasonable polars, sometimes we have contact with boatowners, sometimes we can get enough data from tracking IRL boats while racing. Usually it's a combination of everything.
  • Re: HOW TO CHANGE THE NAME OF MY SHIP?
    Board » Technical Support
    You can't change your boat name. We can do it for you, send us an e-mail (on the admin@sailonline address) with the new boatname you want.

    --- Last Edited by kroppyer at 2017-12-06 09:11:23 ---
  • Re: swr 14-15 leg1
    Board » Sailonline Race Committee » Races
    Good catch nacrr, it was hidden by accident. I made it re-appear and everything should be back to normal soon.

    You can already find it here:
    http://www.sailonline.org/races/756/leaderboard/
  • Re: WX Release Time Standardisation Suggestion
    Board » Sailonline Race Committee » Races
    We may be able to change the time the weather update becomes active on our server, but we cannot change the time of publication on NOAA's servers. Basically, it means the weather that we will have can be known long before our delayed wx update, effectively not changing a thing at all to the time you need to check the weather and adapt your courses to react to the new forecast.

    We're all aware of the sleep deprivation factor here when using the high resolution weather from the NAM model. SRC is very careful with using the model, and you can be sure that it won't happen too often that two races using different wx updates run in parallel.
  • Re: VOR, Vestas incident & report.
    Board » General Discussion
    Yes Rod, using more realistic nautical charts would hugely improve the educational value of sol wrt navigation. but we have to be careful that sol remains accessible for the masses, not only the ones that are (a) experienced in navigation or (b) willing to invest time in their navigational skills.

    I'm sure there's a middle way that solves this problem: nautical charts, but no requirement to understand every element of it to successfully sail a race (by using our own very simple and clear "you can sail in this area, not in this area"-two-colour-map as overlay for example)

    While sailing on sailonline, I would really like to have some more detail of the region where I'm sailing. There's lots of reefs, shallows, bridges, etc. etc. that we're missing out on. Problem is, when I'm not online, I really like not having to worry about all these things. I'm not able to spend as much time online during the week as I would be able to spend on deck during and actual IRL sail.

    Then of course, there's the technical side: we need a world map where there is a clear divide between "navigable waters" and "running aground" so that the computer can understand. As far as I know, the map we are currently using (GSHHG) is one of the best that is available at reasonable cost (in this case: free). In the best case, the process of changing to another map is a lot of work and needs a lot of testing. We are slowly moving towards a situation where we hope to be a bit more flexible, but its hard work. At some point in the future it may be possible to show some more detail in the map, but there is a lot to do before we get to that situation.

    --- Last Edited by kroppyer at 2017-11-05 10:58:50 ---
  • Re: Crossing the Finish Line
    Board » Technical Support
    Rankings of an individual race are calculated every minute or so. The DTF is updated more often. So it may be the case that the ranking updates and places boat A on #1 and B on #2, just before they finish. Then B overtakes A and they finish. The leaderboard will update DTF, showing #1: A, #2: B, both with DTF 0 (finished), and after a minute, maybe little more, they switch position to reflect that actual finish order.

    I'm not sure how to explain two changes after DTF has reaches 0, but the main idea is that the actual ordering/ranking of the leaderboard is lagging behind a little bit, which usually isn't a big deal, but when people are finishing close together, the leader board need a couple of minutes to settle.
  • Re: RTW 2017/18 Courses
    Board » General Discussion
    I believe leg 1 of SWR was inspired by an IRL course that was in fact never sailed, I think because the race organisers opted for a different course based on the weather forecast. In my own opinion, our SWR leg 1 wasn't really the typical ocean race leg, but having seen the course for leg 2 (admin perks :) ), the next leg will definitely be the typical Southern Europe to South Africa ocean race. And although I'm not part of SRC, I'm pretty sure the other longer legs of our SWR will be implemented as round the world races are typically done. For the shorter legs I'm sure SRC will also look around for IRL course designs, but since start and finish may not be that far apart, there may not be one single 'typical' course, and SRC will need to make a choice as to what sort of course they want to design before things like weather forecasts are available. This is where we are different from IRL race organisers: we can't do last minute changes (based on weather or whatever), because there are just too many sailors on our races, and almost none have sol as their full time job.
  • Re: Discarding ziggy points or… not.
    Board » Sailonline Race Committee » Championships
    You make some good points, let me clarify.

    200 series. In each series I picked 200 boats and had them sail 40 races (for each new series, I picked a new set of 200 boats, but within a series, I used the same set of boats for the 40 races).

    To determine the "true ranking", simulated 1960 more races in each series, totalling 2000 races in each series, but only the first 40 are used in the analysis.

    Why 40 races? because I thought series with more than 40 races were not too interesting to look at. But yes, my results for a series of x races and that for a series of x+1 races are not at all independent.

    About DNF and bad races, you are correct. Let me give a more accurate description of the probabilities, solving the problem:
    - the probability of having a bad race assuming the boat finishes (between 5 and 15%)
    - the probability of scoring a DNF (between 2 and 8%)
    The actual implementation works as follows: flip a (weighted) coin to determine if the boat scores a DNF, if the boat doesn't score a DNF, flip a different weighted coin to decide between a good and a bad race.

    Although I'm not really surprised by the results, I cannot really explain what's going on either. I'm continuing to investigate.

Races

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Current Races:

The Three Festivals Tall Ships Regatta 2018 - Race 1
Welcome to the first of two races of The Three Festivals Tall Ships Regatta - a run of 147nm from Liverpool, around the Isle of Man to finish offshore Dublin. A pleasant outing for our elegant Clipper ships.
NOTE:Starts and Finishes in Tall Ships racing are offshore to avoid conflict with shipping and shipping lanes.
Race #1143
INFO by brainaid.de
Clipper 240 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
RANKING: Tall Ships - SYC
ALT. CLIENT: Classic
Race starts: May 28th 15:00 Registration Open!
GO TO RACE

Aegean Rally 2018
"The International Aegean Sailing Rally is a regatta with a long history, organized every year by the HORC (Hellenic Offshore Racing Club). It is the oldest and most splendid sailing event in Greece and is characterized as a marine Marathon", thus write its organisers, The Hellenic Offshore Racing Club, and in 2015 SOL followed the IRL yachts round for all four legs. Marathon, however, lies too far off the beaten track, so, we, at SOL, much encouraged by the great success of our ouzo-fuelled sprint of January this year, have decided to use another of the 2015 legs for sprinting. This one starts in Athens, then rounds Agios Dimitrios Kythnos for Piperi, to finish at the Temple of Poseidon on the tip of the Attica peninsula.
Race #1138
INFO by brainaid.de
GB90 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
SPRCH - SPRQ2 - SUPSOL - SYC
ALT. CLIENT:Classic
Race starts: May 26th 16:00 Registration Open!
GO TO RACE

SWR 17/18 Leg 9 - Newport to Cardiff
We are back in the northern hemisphere!
After a good rest in Newport it's time to head for Europe, more specifically Cardiff in Wales
"A smooth trip" you might think, but The Atlantic Ocean can offer many surprises. One of them could be The Azores High, which in the late spring can drift north and block your route to Cardiff.
Consider yourself warned.
Race #1146
INFO from brainaid.de
OD65v3 Particulars
WX Updates: 0430 / 1030 / 1630 / 2230
Ranking: 2017SWR-2018OCCH-2018SUPSOL-2018OCQ2-SYC
PRIZE: SMPF
SOL Classic Client
Race starts: May 20th 18:00 Registration Open!
GO TO RACE

Van Isle 360 2018
Welcome back to Vancouver and the 525nm delightful course designed by SOLer fastpassage39. This is a tricky race, combining tight channels and open water which our TP 52 will love.
Race #1147
INFO by brainaid.de
TP 52 Particulars
WX Updates: 0430 / 1030 / 1630 / 2230
Ranking: SYC
ALT. CLIENT:Classic
Race starts: May 17th 16:00 Registration Open!
GO TO RACE

Tristan TIMED Race 2018
Welcome to the South Atlantic and a challenging 68nm course around the three quaintly and incongruously named islands of the remote outpost known as Tristan da Cunha. The gales may come and go but the sea is everlasting. This is a TIMED race originally designed by NZL_Scotsman.
RE-REGISTER HERE to race again after finishing a run.
Race #1130
INFO by brainaid.de
Farr 38 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRCH-SUPSOL-TRQ2-SYC
ALT CLIENT: Classic RACE CLOSE: Sunday,
27 May at 2300utc
Race starts: May 06th 12:00 Registration Open!
GO TO RACE

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