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Profile for JB



Name JB
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Sail Fair.
  • 2018 SYC rankings
    Board » Sailonline Yacht Club
    Good afternoon all.

    Probably I'm missing sometning but, I don't understand why my first seven 2018 40' Series results were discarded from my SYC results.

    Thank you.

    João/psail
    Sail Fair.
  • 40’ Series hiatus.
    Board » Sailonline Race Committee » Races
    Good morning all.

    I’ve read the SRC annual report about the 40’ Series and it’s sad to know this SOL championship won’t turn in 2019.
    I understand and also agree with SRC exposed arguments. Pity that a phew conditioned the remaining majority.

    One possible way for overcoming the main issue, if not, the only one - the boats overuse/abuse from some skippers - is to make the Series races with pre-fixed boats for all, turning the Series to a OD championship with #4 - #5 40 footers to be used.
    But you loose part of the game.

    Other suggestion, independently of the Series future format (OD or multiple choices), is to upgrade the Series with faster boats, instead of “artificially” downgrading the faster ones (notice: one was already available in the SOL marina for the 2018 Series).

    From my part I’ve trying since a while to bring the Melges 40 Polar but till now without success.
    So, if anyone out there can give an hand on this I’ll be very thankful.

    Thank you.

    João/psail
    Sail Fair.
  • Re: qtVlm thread
    Board » Technical Support
    Hi Philippe and all.
    Good afternoon.

    Well, the settings I’ve been using a long time (since they were available) are the same, so I don’t have any induced distortion on comparing results generated with different settings.

    Those settings have proved to give results in all kind of WFs and with different boat Polars, being also more relevant with the faster boats, as you easily understand and as per example I sent you recently.

    Correct, the lower the Time Step (TS) used for calculating the Isochrones, the bigger will be number of potential WPTs. That’s the price for getting precision.

    The first point you mention misses rationality.
    We all know that ANY GRIB file won’t be exactly what you are going to sail IRL. Under that argument - yours - I ask why do we make routings?

    I totally agree with your second point and part of the third. For that I can give you one plausible answer for people not using TS = 5 minutes: I takes a lot of time to get a result, not because is less precise.

    In relation to fourth point, previously I gave you a suggestion: bring back the old "cutter", which I now reiterate.

    If it doesn’t have anything to do with the used TS, what’s the problem for implementing it again?

    My Dear Friend have also
    a Merry Xmas

    João/psail
    Sail Fair.
  • Re: qtVlm thread
    Board » Technical Support
    In past years we saw a quick evolution not only on weather routing software but also on sidekicks aiding tools.
    One of the best weather routing programs used around the corner is qTVlm. Since the very first versions it has been upgraded in a good rhythm bringing also a plethora of innovations, sometimes using info and suggestions gathered from the community.

    Anyhow, one qT aspect that has been roller coasting is the Optimizing/Simplifying algorithm processes applied to the calculated routing WPTs.

    It is very simple to verify that in spite of using the “Optimum Simplify” process first, and "Optimize" after (applied only once or several times), normally we won’t get the best ETA - even before any trimming operation on the fixed calculated WPTs, the ones in “red” color generated around land/rocks/barriers and on the remaining "green" movable ones.

    The cause for this is identified. Is a direct consequence of the used decimating algorithm implemented in qT for the “Simplify”/ “Optimum” processes.

    In recent versions - 2018 - this issue was aggravated as the decimating operation during the “Simplify” process stopped being uniformly applied along the routed path, leaving us to the somehow paradox of having more remaining WPTs in the end of the route, precisely where the predictability of the WFs are worse, which is a contra sense.

    There are ways to overcome this issue but, again with another contra sense, as you have to spend more time rehabilitating an over decimated routed path by adding new WPTs.

    Every WPT over decimated is a less one degree of freedom in the generated curve, giving here the main reason for qT going in opposite direction of the optimum ETA.

    Sincerely hope that qT responsible persons take once for all this issue and, at least bring back the “old” decimating algorithm, the uniform “cutter”.

    João/psail
    Sail Fair.
  • Re: GGR race final position.
    Board » Sailonline Race Committee
    Good morning SRC and all,

    Thank you for your reply &
    Merry Xmas.

    João/psail

    Sail Fair.
  • GGR race final position.
    Board » Sailonline Race Committee
    Dear SRC and all,

    Good night.

    Only now saw the final leaderboard for this race and, as expected I've suffered a time penalty accordingly to the race rules.

    In fact, I've departed from Hobart before time - didn't respect the 90 minutes stopover. It's a fact.

    Anyhow, if you look to the attached pictures you'll understand better what happened and following actions from psail.

    After recognizing my mistake I immediately imposed a self-penalty, stopping the boat for more than 90 minutes.

    So the late SRC action doubles the previous token on due time, i.e., the self imposed penalty psail made.

    For the mentioned reasons I kindly ask SRC to review psail final race position.

    Thank you SRC.

    João/psail



    Sail Fair.
  • Re: qtVlm thread
    Board » Technical Support
    No such problem here, what version are you using on which platform?

    @João/psail what other problems ?
    Replied today to Philippe.
    Latter I'll give further details.

    João/psail
    Sail Fair.
  • Re: qtVlm thread
    Board » Technical Support
    Hi all.

    Andrew, if memory doesn't fail, the related problem came on the qT 5.8.2 version, hence the main reason for stop upgrading qT since 5.8.1 (there are other reasons).

    João/psail
    Sail Fair.
  • Cookson 50 Polar data
    Board » Technical Discussion
    Hi all.

    Some time without coming here.

    Let’s see if the SOL community can bring some help on this subject.
    Please, I need a Cookson 50 Polar.

    The ones (#4) published on the link:

    http://jieter.github.io/orc-data/site/

    are limited as they stop at TWS = 20 Kts.

    The other reference I’ve found to the Cookson 50 Polar was on

    https://www.duo.uio.no/bitstream/handle/10852/12589/master_nils.pdf?sequence=1

    but has a poor graphic representation.

    So, if you have or know a location where I can extract one, pls give info.

    Thank you.

    João/psail
    Sail Fair.
  • Re: qtVlm thread
    Board » Technical Support
    Viva Philippe

    Good morning.

    Thank you for info.
    Yes, it works as the former "B" command.

    Big Hug
    João/psail
    Sail Fair.

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Auckland to Fiji 2023
Welcome to Auckland and, for the fifth time in Sailonline's history, an epic race to the Melanesian island of Fiji, some 1144nm away. The iconic Steinlager 2 has traditionally been our boat of choice for this event, including in 2020, the last time we raced the course – alone, unaccompanied by a real fleet as it had been #COVID19 quarantined. Alas, this year we will again be racing unaccompanied as low entry numbers has seen the real race cancelled. Hopefully, though, some of the real sailors from the Royal Akarana YC, hosts of the real event, will be joining us online to pit their skills against ours in the ever-changing forecast winds.
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Susan Hood Trophy Race 2023

Lake Ontario Offshore Racing (LOOR) welcomes racers to the third virtual Susan Hood Trophy race. This is a 75nm weekender on western Lake Ontario starting and finishing at the Port Credit Yacht Club (PCYC) via Niagara and Burlington, and is one of two that will count towards a special Sailonline's LOOR Series medals. As our Beneteau First 36.7 managed the course so well in previous years, we shall race her again!
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SoCal 300 2023


Here, once again, is your chance to participate virtually in a second race of the California Race Week calendar, SDYC's challenging 243nm (as the seagull flies) SoCal 300 from Santa Barbara to San Diego. With a broad range of boats entered in the real race, virtual SOLers will have to dig deep to remain competitive in our trusty Santa Cruz 52s.
Race #1674
INFO by brainaid.de
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Cape Town to Auckland 2023
Welcome to this second RTW race 2023. It's also the June edition of this year's ocean race championship. The course is slightly different from the one sailed in 2020, which then also was part of the RTW series.
This time we will race in the IMOCA 60 foil, as in all RTW races this year. That should guarantee the fun in the South Seas in a truly tough race.
PRIZE: SMPF
Race# 1685
INFO from brainaid.de
IMOCA 60 foil Particulars
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CA 500 2023


To celebrate the 50th anniversary of the TransPac Ocean Race in 2019, the organisers of the California Race Week introduced a new longer distance event for line-honours machines. Popular with the largest maxi trimarans, this CA 500, 500nm from San Francisco to San Diego, repeats in 2023, and if you don’t own a maxi trimaran, Sailonline are delighted to have the honour to, for the first time, make their virtual version available to you for a quick ethereal dash down America’s west coast.
Race #1687
INFO by brainaid.de
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Race starts: May 26th 18:00 Registration Open!
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Lisbon to Cape Town 2023
Our second OCC race in Q2 is also our first race of a special
6-race RTW series, in IMOCA 60 Foilers, from the board of ita10267. Long bluewater legs, with the shores of the World's continents the only restriction on where you may sail, starting with a 5000nm leg from Lisbon to Cape Town. Enjoy!
PRIZE: SMPF
Race #1683
INFOby brainaid.de
IMOCA 60 foil Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - OCCH - RTW - SUPSOL - SYC
RACE CLOSE: Thursday,
June 1 at 2300 UTC.
Race starts: May 03rd 09:00 Registration Closed

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