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Profile for ita10267



Name ita10267
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Posts88
  • R.I.P. J24Opla
    Board » General Discussion
    Yesterday we received the sad news that Claudio (aka J24Opla) sadly passed away.
    Claudio was a great sailor, mostly appreciated in the lakes Maggiore and Garda and also a very active member of SOL community. Unfortunately he became very ill and COVID was not nice to him.

    May he rest in peace and sail away in smooth sea.

    Andrea (aka ita10267)
  • Re: RIP psail - Joao Malafaia
    Board » In memoriam
    Still shocked by the terrible news! Had quite a few professional chat with Joao and I will remember him for is clear and concise way of thinking. Like to remember him sailing, IRL or virtually, with the same spirit!

    ciao
  • Re: RTW start
    Board » Flag Officers » Races
    will you?
  • Re: RTW start
    Board » Flag Officers » Races
    Well Done! It was the right decision to make. One of the reason SWR is the main event of SOL year is that we really get to test ourselves against the top navigators. And with 18 hours of headstart (and a totally different wx configuration) it would have been a pity to race this one on our own.

    Thanks to the SRC and management for the reaction in such a short time!
  • Re: RTW start
    Board » Flag Officers » Races
    It appears that we are starting despite the new postponement of the IRL race. I am in total disagreement with this decision as it makes incomprehensible the first postponement. Hope that the SRC can reconsider and delay the start accordingly.
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    In synoptic conditions, i.e. wind given by large pressure systems, forecast are simpler and more reliable (see the Bos-New race with the heavy storm). In fluky conditions, with basically no pressure gradient, wind is given by "local"effect such as cloud coverage etc. So yes, on mesoscale, weather is less "consistent".

    As a comparison, GFS is "averaged" over a much bigger gridsize, so all the small scale variation are zeroed and you ave a more stable but less interesting windfield. On the other hand NAM model, on a 0.1deg scale, has the same behaviour.
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    JB,
    at present time we have to allow for some WX data outside the race course (the purple line). This to allow predictor to work properly in the client. In this race we have used 0.5deg from each side. In the end we had more than 30% of datapoints "useless" for the race. In an optimal condition (no points outside race area), wxfile should have been around 4MB, which travels compressed now, so perfectly usable for the "desktop" client.
    Regarding mobile, probably it has some problems (depending on hardware) regarding memory and cache. Probably Zappe can look into that.
    Finally, the WRF is defined every hour, so dataset is 3X for the same resolution compared to GFS. As outlaw commented, we should push for even higher time resolution (1 frame every 15min). In this case probably we'll have denser frames for the first 6hrs and sparser afterwards.
    Ciao
    a.
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    forecast for sunday morning
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    A small video on high resolution weather

    http://youtu.be/n5ThrmvMJxA
  • Re: The Weather Research & Forecasting Model (WRF)
    Board » Technical Discussion
    so, you are referring to the grid discretization.
    In SOL this changes from race to race. Usually we start from 0.5x0.5 deg GRIB file from NOAA which is then interpolated to the grid of our interest. In Leg4, for the first time, we are running the ocean on a 1x1 deg grid. The "pointy" edges are caused by the interpolation algorithm (bilinear), which is the same we use to get wind in between grid points.
    The WRF model we are using in the BOS-NEW race is evaluated on a much denser grid. This is not an interpolation process but a complete physical evaluation. The 0.5degx0.5deg GRIBS from NOAA are taken as boundary and starting conditions then the calculations are done on a powerful computer. The result is a 0.05X0.05 deg GRIB.

Races

Next Race: 00d 00h 00m


Current Races:

Barbados to Tristan da Cunha 2025

Sailonline is proud to present to our virtual sailors, an all new series RWW 2025 (Round our Water World). Sailing from remote island to remote island with forever only a faintly curving line between sea and sky on the horizon. "Dry land is not a myth". The series ranking uses best 7 from 8 races for scoring, and this first race, from Barbados to Tristan da Cunha, a 4000nm leg into the Southern Atlantic, will be sailed in ex-Volvo OD65s (version 3). The race is also part of the OCCH 2025, ranking best 10 from 12 races.
PRIZE: SMPF
Race #1889
INFO by brainaid.de
OD65v3 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ1 - RWW - OCCH - SUPSOL - SYC
Race starts: Feb 03rd 11:00 Registration will open soon
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Seychelles Circuit Sprint 2025


Nothing better than a winter break in The Seychelles, and especially if there is a fleet of X-332’s available to charter and to race round an impromptu course of c 21nm taking in some of the archipelago's granitic islands. Tarry awhile before and after, but beware the navy and the pirates, mind!
Race 1895
INFO by brainaid.de
X-332 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
SPRQ1 - SPRCH - SUPSOL – SYC
Race starts: Feb 02nd 03:00 Registration will open soon
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Race to Up Helly Aa 2025

A-OI!!! The fiery spirit of Shetland’s Up Helly Aa festival is here, and Sailonline’s much-anticipated annual race to Lerwick is back! Spanning 383 nautical miles from Aberdeen, this exhilarating event pays homage to Europe’s largest fire festival. Piloting our Dehler 46s, designed by Judel/Vrolijk in 2015, our SOLers will navigate the challenging waters, competing for glory as flames illuminate the Lerwick skies in celebration.

SAILING NOTE: Gruney may be approached from any direction but must be passed for rounding purposes as indicated on the chart.

Will you master the course, outmaneuver the competition, and claim victory? The challenge is on—join us!
Race #1880
INFO by brainaid.de
Dehler 46 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
SYC
Race starts: Jan 30th 15:00 Registration Open!
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Africa by Sea 2025 - Port Said to Tangier


Back in the 7th C BCE, pharaoh Necho II may have commissioned Phoenician sailors to explore south down the Red Sea and if possible return north via the Straits of Gibraltar. Herodotus was inclined to dismiss the story as it included reports of the sun standing in the north, which had to be nonsense. Silly old Herodotus, but who cares, 2800 years later we will repeat the feat, but we’ll go the other way round, and not in a galley but in different modern sailing yachts, beginning with the comfort of an IY 14.98 for the first leg of 1900nm from Port Said to Tangier.
Race #1854
INFOby brainaid.de
Italia 14.98 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - ABS
Race starts: Jan 22nd 17:00 Registration Closed
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Aden to Goa 2025


Europeans are primarily acquainted with the historical narrative of how spices reached their continent from distant regions. However, the spice trade from Goa to Aden predates the modern era, as detailed in this article. Sailonline is now reversing this route, organizing an eastbound yacht race of approximately 1700 nautical miles across the Arabian Sea for our 21st-century Archer 78 yachts. Wishing you fair winds and may the enticing aroma of spices guide you safely to your destination!
Race #1887
INFO from brainaid.de
Archer 78 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ1 - ARCH - SUPSOL - SYC
Race starts: Jan 20th 17:00 Registration Closed
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Vendee Home - Cape Horn to Olon 2025

Welcome to our 2025 Ocean Race Championships starting off with the classic 6900nm drag race from Cape Horn back to the coast of Brittany leading or following the boats of the Vendee Globe fleet. A new polar from the board of the BNH Design Partnership is being made available to you for this one, in the hope that aboard her you too will be able to cover 600nm in a day when the conditions are right! It's winter outside, so like the IRL sailors, enjoy and stay inside!
PRIZE: SMPF
Race #1874
INFO by brainaid.de
IMOCA 60 Foil v2 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ1 - OCCH - SUPSOL - SYC
RACE CLOSE: Saturday,
February 8 at 2300 UTC.
Race starts: Jan 06th 11:00 Registration Closed
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