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Board » Sailonline Race Committee » Race proposals » New TR and new SOL boat.

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Hoi Kroppyer. The idea behind the high wind speed performance curves is that you should not be out in those winds in your AC72 at all at all. But if you are, then above 40 knots everything stops. Crash, boom, wallop, carbon fibre round your ears. The curves were made using relatively few data points. Below 26 knots they were the ones Joao found the jury used to determine penalties. Above 28 knots they were simply ones I made up to model a dramatic decrease in performance. The interpolation algorithm filled in all the intermediate points, and, indeed, I may have noticed that at high speed some of these went slightly negative when the algorithm tried to model fair curves. On Sunday I thought about fiddling the numbers further, but then said to myself 'so what; the main thing is that at high wind speed you spin out like Lewis Hamilton'.
PS I kind-a-knew the performance loss rule wasn't something to be altered on a whim, but Joao had done some honest research and he is right to feel strongly about its inadequacies for VHP machines. So we left his thoughts intact.
oops i see i was logged on as sol last night.
Clipping along
Viva Kroppy.

Thank again for your comments, always so pertinent.

In theory (and practice) the BS you read from a boat Polar Data has to be equal or bigger than the value zero. So, there’s no sense in having a BS slower than zero knots.

Yesterday, Jan gave here a detailed explanation for having those odd values (the negative ones) on the AC72 SOL boat Polar Data we prepared.
We should consider those negative values for the BS as plain zero.

Being a non-exclusivity for this particular boat, one of the things this AC72 SOL boat will corroborate (again), is the inadequacy of the actual SOL Performance Loss function.
In this case, it just stretches it.

One can argue that, if it’s working, even it’s wrong, it shouldn’t be fixed.
I would say: it’s working, it’s wrong and, can/should be improved.
Otherwise, I wouldn’t be here.

My idea for this debate is very clear and simple, almost in tune with yours, Kroppy.
Boat mass, boat speed and turning rate should enter the equation for finding a new SOL Performance Loss function that fit’s closer to sailing reality.

I was working on it.
Fair winds to all.
AC72 polar in some standardized format. Some programs should be able to open this. Hopefully this makes it a bit easier to convert it into something the sol-server understands.
Attachments
Impressive guys, can't wait to get to sail this beast!
My opinions may have changed, but not the fact that I'm right.
Hurray! hmm put the new polar on the server!

polar as in client

AC72 vs Orange 125ft Cat

--- Last Edited by kroppyer at 2014-08-23 09:21:30 ---
Attachments
Viva Huib.

Just a small note on your AC72 Polar data txt file. Please have a look on the columns for TWS above 42 kts.

Big Hug from here.
Fair winds to all.
There are no columns for TWS above 42 kts. I believe SOL server extrapolates so that the boatspeed for TWS outside the range remains constant. In this case, boatspeed will remain 0kts above 42kts.

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Garagiste's Test Lab

From space Qeshm Island in the Persian Gulf resembles a dolphin. The Question of Qeshm is do we helm our First 27 solo north or south of the island in this 79 nm race. This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have 13 days and 11 hours to test your skill and decision making after the race opens.
Race #2029
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Isla San Lorenzo RTI 2025


SOL’s SRC (Sailonline Race Committee) has taken us to some unusual places in the past, and San Lorenzo Island off Lima’s Callao peninsula is definitely another one. Housing a naval base and a penal institution, no vessel is allowed within 300m of its shores. Also, with no sources of potable water, it is a matter of debate whether it is an island at all, and not just a large rock. So, whatever you do, don’t be tempted to BBQ; you’ll be arrested and go thirsty! We return for the first time since 2018 to race thirteen potentially unlucky miles in J-30s; have fun!!
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Patricks Test


The Three Kings Race returns with a demanding 468 nautical mile challenge from Auckland up to the remote Three Kings Islands and back again. This rugged and spectacular course tests both endurance and strategy as our SOLers navigate open ocean and ever-changing conditions. Racing the powerful Riptide 50, our SOLers will need precision, timing, and smart routing to master this iconic out-and-back course and secure a strong result!
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Joanne's Test Race Zone

In 1947, Hugh McLean & Sons of Gourock, Scotland built a radical racing yacht for John Illingworth, soon-to-be Commodore of the RORC, to a design by Laurent Giles. With a masthead rig, giving her ‘free’ sail area per the rules of the time, and short overhangs reducing pitching, Myth of Malham went on to win The Fastnet that year and again in 1949, and to compete in numerous Admiral's Cups. In 1958, in honour of the yacht, the Myth of Malham race was conceived - a mini-Fastnet to the first lighthouse on a rock west of Cowes, Eddystone, rather than the second, to be held in non-Fastnet years. IRL this year it has been raced already, but this stops us not from “Red Eye” racing its online 230nm in Fareast 31Rs, leaving how to deal with the Isle of Wight open to your own discretion.
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Marstrand to Cowes 2025


We invite you to another race, which will kick off the third quarter of our ARCH series. We'll set off from Marstrand, Sweden, which, along with Skagen, Denmark, marks the line commonly recognised as the border separating the Baltic Sea from the North Sea. The 650nm route will take our Ripitide 50 across the North Sea and the English Channel to Cowes, England. Watch out for the fast ferries crossing the Channel from Calais to Dover 😊.
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Puil's Practice Palaver

The Guess about Gotland is do we helm our First 27 solo east or west of the island in this 140 nm race. This is a TIMEDrace so you may RE-REGISTER HEREto try again after finishing a run. You will have 13 days and 11 hours to test your skill and decision making after the race opens.
Race #2030
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Gulf of St Lawrence - test - Mirek
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Stefan's Duck Pond

Welcome to yet another all-new route. This next race is part of our Ocean Championship as well as the ROW series. Falklands to Tasmania, is like last year's island to island. It’s one of the longer ones 6400nm, more than half way around the world (and the Antarctica). It starts the 2026 OCQ2, and will be sailed in our Steinlager 2, contrary to prior notice.
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Trapped Camel
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Caravanserai
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Patrick's Playpen


Welcome to the legendary "Westcoaster," a race that has tested sailors for over 50 years. Spanning 435 nautical miles, this iconic journey takes racers from Melbourne, across the formidable Bass Strait, and around Tasmania's rugged west coast to the finish line in Hobart. Organized by the Ocean Racing Club of Victoria, the Westcoaster is renowned for its challenging conditions and adventurous spirit. This year, our SOLers will tackle the course in the swift and capable First 47.7, a yacht launched by Beneteau in 2000, built for speed and endurance in long ocean races. Get ready for an exhilarating ride in one of Australia’s most celebrated yacht races!
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Mirek's Mess & Canteen
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Antarctica 1 of 3
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Flinders Island TIMED Race 2024

In the southern reaches of the Bass Strait between mainland Australia and Tasmania, you will find the Furneaux Group of islands, largest of which is Flinders, both named after famed British navigators. Your mission, should you choose to accept it, is to race your Ocean 50 catamaran a course of c 106nm around Flinders in the fastest time. This is a TIMED race, so you may RE-REGISTER HERE to try again, after finishing a run. This course will self-destruct in 13 days and 11 hours after opening for entrants.
Race #1776
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Tasman Double 2023 - Hobart to Sydney
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John's Test Zone
It's time to test your ocean racing skills in a variety of weathers as we head the 6400 NM between Hong Kong and Auckland in a fast Super Maxi 100. We'll be heading from a northern summer to a southern winter so keep plenty of cold weather gear and warm rum on board!
PRIZE: SMPF
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calm's Practice Race
Last raced in 2021, we return to Boston for another race to Newport. And just like in 2021, the chosen boat is once again the speedy R/P 66. This is a TIMED race so pick your winds wisely and see how quickly you can complete this 132nm run! For reference, the winning time in 2021 was 6:12:28.
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ZONA DE PRUEBA DE MANUEL

Welcome to the Shorthanded Sailing Association of New Zealand's 2022 Evolution Sails Northern Triangle series, which, unfortunately, to comply with latest NZ government COVID restrictions, has been reduced to a duo, commencing with this short prologue of approximately 35nm on the waters of Auckland's Hauraki Gulf. As so often with SSANZ events in the past, online we will be racing the event in ever-young Young 88 one-designs. Have fun!
Please note the displayed course is provisional; the actual course will be set after the IRL course is announced at the skipper's briefing 48 hours before the start, and no later than 24 hours before the start.
Race #1561
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San Sebastian to La Rochelle 2021
Once again, our SOL race will be shared with a group of Polish sailors, representing one of the stages of their Virtual Training Cruise around Europe. 171 nm in Delphia 47s across the not always calm Bay of Biscay from San Sebastian to La Rochelle will undoubtedly be one to test their skills. Welcome/Witajcie and we wish you all fair winds.
Race #1441
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Aland Sea TIMED Race
Norrtalje Segelsallskap, 70km NE of Stockholm was founded in 1920, and time was when the society’s season opened with a challenging offshore race from the club line off Flaten island at the mouth of the long and narrow Norrtaljeviken, out onto a triangular course around the Aland Sea, to finish at Simpnas slightly to the north on Bjorko island - some 78nm in total. A fine race that SOL, being from these parts, ran annually up until 2013. Last run in autumn 2018, we return here to race the course again in the form a TIMED RUN in spanking new Club Swan 50s.
RE-REGISTER HERE to race again after finishing a run.
Race #1444
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Bimmer's Test Zone
What about a speedy X-362 380nm race in the waters off S America, just to blow cobwebs away!!
Race #1415
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Antarctica 3 of 3
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Race starts: Sep 16th 11:13 Registration Closed

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BLANK POLAR
Race starts: Feb 16th 00:00 Registration Open!

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