Profile for JB

Board Signature
Name	JB
Email Address
Avatar
Posts	305
Sail Fair.

2018-12-28 13:12:23

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.
2018-12-28 10:00:16

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.
2018-12-25 17:14:22

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.
2018-12-25 11:49:39

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.
2018-12-25 08:55:38

Re: GGR race final position.

Board » Flag Officers

Good morning SRC and all,

Thank you for your reply &
Merry Xmas.

João/psail

Sail Fair.
2018-12-21 21:48:37

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.
2018-12-21 21:35:50

Re: qtVlm thread

Board » Technical Support

maitai said @ 2018-12-14 15:07:13:

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.
2018-12-13 13:20:32

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.
2018-11-28 12:45:13

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.
2018-06-25 06:48:09

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

Next Race: 00d 00h 00m

Current Races:

Southampton to Punta del Este 2024

Sailonline is delighted to offer our sailors a 'reversed' Atlantic ocean race. As the RTW championship Atlantic part takes a detour to the Bahamas, we will offer you a reversed course as we will not do the 'usual' leg this year either. It is the July edition of this year's Ocean Championship. Our boat is the OD_65v3.
PRIZE: SMPF
Race# 1820
INFO from brainaid.de
OD65 PARTICULARS
WX updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ3 - OCCH - SUPSOL - SYC
Race starts: Jul 01st 11:00 Registration Open!

▶ Flash

GO TO RACE

Tall Ships Races 2024 - Klaipeda to Helsinki

Welcome to the first of three virtual Tall Ships Races on the Baltic Sea which are being organized in-real-life by Sail Training InternationalThis first race is from Klaipeda, Lithuania to Helsinki, Finland; circa 240nm in Sailonline’s stately fanciful Full Rigger.
NOTE: Starts and Finishes in tall ships racing are always offshore to avoid conflict with shipping and shipping lanes.
Race #1811
INFO by brainaid.de
Full Rigger PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: TS - SYC
RACE CLOSE: Saturday,
July 6 at 2300 UTC.
Race starts: Jun 27th 14:00 Registration Open!

▶ Flash

GO TO RACE

Haida Gwaii 2024

We will end the second quarter of the ARCH competition with a 390nm race around the Haida Gwaii islands (literally "Islands of the Haida people"), also known as the Queen Charlotte Islands. This is an archipelago located on the northern Pacific coast of Canada. In SOL, we last raced on this route in 2012 and few people remember what happened there. Prepare your Riptide 50 well, it's going to be a lot of fun.
Race #1819
INFO from brainaid.de
Riptide 50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ2 - ARCH - SUPSOL - SYC
RACE CLOSE: Wednesday,
July 3 at 2300 UTC.
Race starts: Jun 24th 17:00 Registration Closed

▶ Flash

GO TO RACE

Newport Bermuda Race 2024

The 636-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 53rd running of the Bermuda Race can again also be participated in online.
Entries are invited for one of the four divisions:
Double-Handed Division:
Jeanneau Sun Fast 3600
St. David's Lighthouse Division:
Santa Cruz 52
Gibbs Hill Lighthouse Division:
Judel Vrolijk 62
Finisterre Division:
Riptide 50
Details for each yacht are available in the ‘Particulars’ links below. 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 #1808
INFOby brainaid.de
Sun Fast 3600 PARTICULARS
Santa Cruz 52 PARTICULARS
Judel Vrolijk 62 PARTICULARS
Riptide 50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: None
RACE CLOSE: Friday,
July 5 at 2300 UTC.
Race starts: Jun 21st 17:05 Registration Closed

▶ Flash

GO TO RACE

Auckland to San Francisco 2024

Welcome back to Auckland as we continue our Round The World voyage. This 5600 nautical miles race from Auckland to San Francisco, first sailed in 2023, is the third leg of the RTW, proposed by SOLer ita10267. It is also the June edition of this year's Ocean Championship. Our boat is the Swan 65, as in all RTW races this year.
PRIZE: SMPF
Race# 1790
INFO from brainaid.de
Swan 65 PARTICULARS
WX updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - OCCH - RTW - SUPSOL - SYC
RACE CLOSE: Tuesday,
July 9 at 2300 UTC.
Race starts: Jun 03rd 11:00 Registration Closed

▶ Flash

GO TO RACE

Go to race archive

SYC Ranking

View full list

Series

Mobile Client

SYC members have the benefit of access to our mobile/lightweight web client!

The mobile client