Facebook

Login

Support Sailonline

If you haven't already - join the SAILONLINE YACHT CLUB!

Please also consider making a donation - all amounts are greatly appreciated!

Board » General Discussion » IMSYC / SOLstice Cup

Page: Previous 1 2

Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2011-05-02 06:14:15 - Re: IMSYC / SOLstice Cup
Looks like a nice course Jakob!

Where can we find check_IMSYC66_parameters.m and IMSYC_weight_and_KG.m?

SOL's honour must be defended! ;-)
Posted by
jakob


Users avatar

Posts
364
Registered at
2007-09-04 10:05:30
2011-05-02 06:35:10 - Re: IMSYC / SOLstice Cup
You find them in Homework set 5 and 6.
...one of the guys behind the game...
Posted by
A2


Users avatar

Posts
347
Registered at
2009-10-26 00:39:42
2011-05-02 18:30:23 - Re: IMSYC / SOLstice Cup
Tardis is in dry dock,
pending further developments.

--- Last Edited by 8mR Who at 2011-05-10 15:05:43 ---
None so blind
Posted by
Rod


Users avatar

Posts
392
Registered at
2010-06-24 22:30:48
2011-05-02 19:41:20 - Re: IMSYC / SOLstice Cup
I am interested in this 8-metre project, for a few different reasons.
Designing a boat is not a simple procedure, and is very time consuming. Merely changing a few of the parameters in the class rules is hardly the way to get a fast hull. The relationship of each dimension in the rules, to a "Fast" Polar diagram is not at all simple---yacht designers have been wrestling with this problem for centuries.
I have been doing essentially the same thing with regards to designing a radio-control Footy Class yacht, which is designed to a "box rule" (1ft long x 1ft deep x 6in wide), free rig, free displacement. I have been using the Vacanti CAD program, which produces both a set of plans and an extensive set of hydrostatic measurements, as well as graphs of drag curves. A designer needs to examine the effects of a wide variety of possible hull changes before even a rudimentary understanding of the characteristics which make for a fast hull can be obtained.
Only a very few SOLers may be willing to devote the needed time to this enterprise. I don't think I will be one of them, although I would certainly want to enter the race series itself
As an alternate way of developing this race, perhaps the polars for a number of existing 8M yachts could be obtained, and the SOL entrants pick which ever design suits their fancy. I am sure that no existing 8M is significantly better than any other in all winds and conditions.
I will watch the progress of this idea with great interest.
If it breaks, it's not strong enough--if it doesn't, it's too heavy.
Posted by
A2


Users avatar

Posts
347
Registered at
2009-10-26 00:39:42
2011-05-12 18:17:44 - Re: IMSYC / SOLstice Cup
With all due respect to my esteemed colleagues who have already posted in this thread I wish to Thank 76T for making this endeavor accessible & doable.

As one who's only experience with sailing is that of a spectator sport that goes all the way back in the 60's when the 12 Metres still held sway in Newport, R.I., I can say that this exercise has enhanced my understanding of the Class rule concept.

While finding the optimum balance of the constituent components in the 8 Metre rule may be likened to seeking the Holy Grail, it does not diminish the enjoyment of pursing it none the less. In fact in may be a strength that such a goal will remain a challenge well into the future.

In all other cases here at SOL we deal with replicated polars so I feel it would be a loss to go that route here and eschew the unique opportunity to add the boat designer to our afterguard.

Without disrupting the current scheduling priorities administered so capably by RC these sort of races could be used as gap fillers as races wind down and the next event has not yet reached its opening phase.

If the courses for theses races could be constrained to a smaller footprint then the opportunity exists perhaps to apply higher definition weather grids for upwind / downwind leg racing.

I would like to see something of this nature go forward if only as a proof of concept sea trial in order to work out whatever particulars need to be addressed.

--- Last Edited by 8mR Who at 2011-05-12 20:07:30 ---
None so blind
Posted by
76Trombones


Users avatar

Posts
362
Registered at
2009-08-03 18:04:56
2011-07-10 16:50:43 - Re: IMSYC / SOLstice Cup
Now that IMSYC 2011 has concluded can we revive your (76T's) 8 Metre Rule challenge using the aforementioned polardesigner.org ?

I have improved my boat & will race against all comers even if that means it is just 76T in a match race.

Once the "Cup" has been Won it will have more value for future competitions.

8^)
I'm game - shall we decide on a format and venue?

I was thinking the other day that the best way to fit this sort of thing into SOL's calendar without disrupting the normal flow of things would be to run it as a very short-course (practice race scale - as Texel) timed race.

If we left the race open for the usual week, everyone could take a run with a few boats, and it would allow the super-keen to run a series using DC starts at agreed-upon times.

I'm partial to the round Isle of Wight course, but it doesn't fit this format. How about a 6 leg "Olympic triangle" (windward,reach,reach,windward,leeward,windward) set off the W coast of Barbados for predictible speed and direction in the trades. Mid-Sept?
Posted by
A2


Users avatar

Posts
347
Registered at
2009-10-26 00:39:42
2011-07-10 19:04:40 - Re: IMSYC / SOLstice Cup
Although I am not well versed in actual sailing competitions I agree that a triangle twice around would reward a well designed polar sailed to its full potential as opposed to having landforms influencing the configuration of the race.

I would like to revisit the polar designer in order to fine tune my design prior to submitting it for certification.

A mid September race target is also good.
Final parameters due by August 31st would allow for the boats to be incorporated into the database for performance evaluation.

I am encouraged to see this special event come to fruition and will abide by any suggestions you feel will make this accessible to the greatest number of skippers here at SOL.
None so blind

Page: Previous 1 2

Please login to post a reply.

Races

Next Race: 00d 00h 00m

Current Races:

Regata dell’Accademia Navale 2025

Welcome to Sailonline’s first partnership with the City of Livorno, in cooperation with the local yacht clubs and the Italian Navy, to offer you the online opportunity to race the Regata dell’Accademia Navale. 630nm in length, starting and finishing in Livorno, the race takes you the length and breadth of the Tyrrhenian Sea via Porto Cervo and Capri. Online, you will be sailing a Class 40, which should keep you well in with the top of the real-life fleet which we will be tracking on screen!
Race #1902
INFO by brainaid.de
Class 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Apr 26th 10:00 Registration Open!

▶ Flash
GO TO RACE

Gulf of St Lawrence 2025


The Gulf of St. Lawrence, with one of the largest and deepest estuaries in the world, will be the site of a completely new race in SOL. Our Melges 40 will take us 950 nm from Bathurst in Baie des Chaleurs around the islands of Anticosti, Pelee and Prince Edward admiring beautiful landscapes along the way. Fair winds.
Race #1910
INFO from brainaid.de
Melges 40 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
ARQ2 - ARCH - SUPSOL – SYC
Race starts: Apr 21st 17:00 Registration Open!
▶ Flash
GO TO RACE

Transat à Deux 2025

Above you see a single-handed sailor semi-foiling his Beneteau Figaro III to the horizon. It is in fact Ireland’s Sailor of the Year and the overall winner of last year’s Solitaire du Figaro, Tom Dolan. Somehow, we got our hands on a polar for the Class, and rather than trying to surreptitiously track Tom and his mates in the 2025 edition of the Solitaire, sailing rather-short, single-handed legs across the Celtic Sea and Biscay, we thought we’d see how our virtual craft would fare on the Class’s double-handed 3900nm Trans-Atlantic, from somewhere in Brittanny to somewhere in the Caribbean via somewhere in the Canaries. Allez, mes braves!
Race #1901
INFOby brainaid.de
Figaro III foil PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Apr 20th 11:00 Registration Open!
▶ Flash
GO TO RACE

Gladstone Ports Corporation Brisbane to Gladstone Yacht Race 2025


Sailonline is thrilled to partner with the Queensland Cruising Yacht Club for the 2025 Gladstone Ports Corporation Brisbane to Gladstone Yacht Race. This 308 nautical mile offshore classic takes our fleet from Brisbane to Gladstone along Australia's stunning east coast. Racing in high-performance Cookson 50s, SOLers will face shifting winds and tactical decisions at every turn. It’s time to test your skills in one of Australia’s most iconic yacht races. See you on the start line!
Race #1904
INFO by brainaid.de
Cookson 50 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
Race starts: Apr 18th 01:00 Registration Open!
▶ Flash
GO TO RACE

Bahamas and Back TIMED Race 2025

Welcome to sunny South Florida for this race that has us crossing the Gulf Stream twice. We depart from Palm Beach for a short run over to Freeport, Bahamas then it’s on to Miami before heading to the finish line back in Palm Beach. 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 test your skill and decision making after the race opens.
Race #1911
INFO by brainaid.de
Santa Cruz 70 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking:
TRQ2 - TRCH - SUPSOL - SYC
RACE CLOSE: Saturday,
26 April at 23:00 UTC
Race starts: Apr 13th 12:00 Registration Open!
▶ Flash
GO TO RACE

Sinbad by Balloon 2025 - Toamasina to Baia de l'Oiseau


You may recall that when last we visited Madagascar in the company of Sinbad, the Sultan commanded our intrepid inspirator to seek out fabled islands where in Summer the sun barely set. We did and we returned but the Sultan wasn’t happy with Sinbad’s report, so here we go again, now by SOL Balloon instead of sailing vessel. Expect to be in the air for at least 2100nm and depending on how the wind brings us, anything between two weeks and two months before we shall descend at the Sultan’s given coordinates!
Race #1884
INFOby brainaid.de
SOL Balloon PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC - SBB
Race starts: Apr 09th 11:00 Registration Closed
▶ Flash
GO TO RACE

Valparaiso to San Francisco 2025

Get ready for an exhilarating new challenge as we set sail on the fourth leg of the 2025 Ocean Championship Series! Following in the 19th century footsteps of Isabel Allende's heroine, Eliza Sommers, 'Daughter of Fortune', this all-new route takes us across the vast eastern Pacific, from Valparaíso, Chile, to San Francisco, California - a 3500nm journey of endurance, strategy, and pure sailing adrenaline. This leg will be raced aboard the powerful Rapido 60, pushing sailors to their limits as they navigate the open ocean. Do you have what it takes to conquer the Pacific? Join us and put your skills to the ultimate test!
PRIZE: SMPF
Race #1900
INFO by brainaid.de
Rapido 60 PARTICULARS
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: OCQ2 - OCCH - SUPSOL - SYC
Race starts: Apr 07th 11:00 Registration Closed
▶ Flash
GO TO RACE

Melbourne Osaka Cup Double-Handed Yacht Race 2025

Welcome once again to what these days is Sailonline’s almost annual virtual Melbourne to Osaka Yacht Race. In real life, this double-handed 5500 nm race between these two sister cities, one deep in the southern hemisphere, the other high in the northern hemisphere, is run every four to five years, and this year is such a year. So, this year’s online version is in sync with the Melbourne Osaka Cup 2025 organised by the Ocean Racing Club of Victoria (ORCV), and the Sandringham (SYC) and Osaka Hokko (OHYC) yacht clubs. We’ll be racing the well-known First 40, a popular size of boat which should be a good match for many of the boats entered in the real race. With the doldrums unavoidably lying across our course, you can expect to be at virtual sea for at least a month!
Race #1669
INFO by brainaid.de
First 40 Particulars
WX Updates:
0430 / 1030 / 1630 / 2230
Ranking: SYC
RACE CLOSE: Wednesday,
April 23 at 2300 UTC.
Race starts: Mar 16th 06:00 Registration Closed

▶ Flash
GO TO RACE

Go to race archive

SYC Ranking

  1. Sailonline Yacht Club Member WRmirekd
  2. Sailonline Yacht Club Member Patrick70119
  3. Sailonline Yacht Club Member KaSToR
  4. Sailonline Yacht Club Member CriticalHippo
  5. Sailonline Yacht Club Member vida
  6. Sailonline Yacht Club Member FreyjaUSA
  7. Sailonline Yacht Club Member rafa
  8. Sailonline Yacht Club Member bonknhoot
  9. Sailonline Yacht Club Member Kipper1258
  10. Sailonline Yacht Club Member rumskib

View full list

Series

Mobile Client

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

The mobile client