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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 » Flag Officers » 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 » Flag Officers
    Good morning SRC and all,

    Thank you for your reply &
    Merry Xmas.

    João/psail

    Sail Fair.
  • GGR race final position.
    Board » Flag Officers
    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.

Races

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Cape Town to Auckland 2024


Welcome to the second leg of this Round The World series 2024. It's also the April edition of this year's ocean race championship. The course is the same as the one sailed in 2023, but this year we sail the iconic Swan 65, as suggested in the concluding RTW race last year.
Prepare yourselves for an epic 30-day journey, navigating through the unpredictable waters of the South Seas. It's essential to take care of provisioning to ensure a smooth and enjoyable race experience. With the longer duration, we anticipate plenty of opportunities for camaraderie, competition, and unforgettable memories.
PRIZE: SMPF
Race# 1789
INFO from brainaid.de
Swan 65 PARTICULARS
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Ranking: OCQ2 - RTW - OCCH - SUPSOL - SYC
Race starts: Apr 01st 11:00 Registration Open!
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Gladstone Ports Corporation Brisbane to Gladstone Yacht Race 2024

Welcome everyone to the 76th anniversary of the GPC Brisbane to Gladstone Yacht Race , Australia's other classic ocean race. Once again, Sailonline is delighted to offer you the opportunity of virtually racing its TP52 over this challenging 308nm course.
Race #1787
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TP52 PARTICULARS
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RANKING: SYC
Race starts: Mar 29th 01:00 Registration Open!
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Vuelta Isla de Chiloé 2024
Designed by SOLer Hotu Matua in 2010 but barely raced since, this is a 263nm race battling the extreme sea, wind and current conditions around the fabulous landscapes of Chile’s Chiloé archipelago. Previously sailed in our somewhat unsuitable Seacart 30, we’ll venture forth in our slightly more modern, water-ballasted Sun Fast 3300 this time. Keep the hatch closed!
Race #1795
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Ranking: SYC
Race starts: Mar 28th 05:00 Registration Open!

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Tyrrhenian Tour 2024

For only the second time in SOL's history we will race 800 nautical miles around the small islands of the Tyrrhenian Sea. Fourteen years ago, as many as 383 yachts took part in the competition, will we match the number of participants this time? So, jump into your Judel Vrolijk 62 and lets get ready to race.
Race #1793
INFO by brainaid.de
JV 62 PARTICULARS
WX Updates:
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Ranking:
ARQ1 - ARCH - SUPSOL - SYC
RACE CLOSE: Wednesday,
April 3 at 2300 UTC.
Race starts: Mar 25th 17:00 Registration Open!
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San Juan Islands TIMED Race 2024

Welcome to the beautiful Pacific Northwest and the San Juan Islands. The Salish Sea is home to five different types of whales including Orcas, making this archipelago one of the best places in the world to see whales in the wild. The Cape 31 is a one-design yacht originally created for racing in South Africa, which has rapidly expanded with fleets around the world. This is a TIMED race, so you may RE-REGISTER HERE to try again, after finishing a run. You will have 13 days and 11 hours to show your skill and decision making after the race opens.
Race #1792
INFO by brainaid.de
Cape 31 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
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RACE CLOSE: Saturday,
30 March at 23:00 UTC
Race starts: Mar 17th 12:00 Registration Open!
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Casey Station to Neumayer Station 2024

It’s late summer now in Antarctica, the sun will still not set, but the Emperor chicks are hatched. Let’s yacht on from Australia’s Casey Station, destination Germany’s Neumayer Station! Our route takes us past Molodezhnaya Stancija, Russia’s self-styled capital of Antarctica, as well as Mirney (RUS), Davis (AUS), Mawson (AUS), Syowa (JAP) and Maitri (IND) down the full length of the continent’s east coast. It’s not much more than 2600nm, so let’s take Brazil’s Amyr Klink’s more stately and very comfortable 29m LOA Paratii 2 for this second leg of our six-leg high latitude adventure!
Race #1765
INFOby brainaid.de
Paratii 2 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: HILAT - SYC
RACE CLOSE: Tuesday,
April 2 at 2300 UTC.
Race starts: Mar 14th 19:00 Registration Closed
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