J/111 Polars & tuning guides
For some reason I get many requests for the J/111 polars…
It’s no secret that I think they are useful to get the most out of a boat. First as a a baseline for performance on a new boat and racing in handicap fleets. But also for routing purposes. And the J/111 have some pretty special characteristics where it’s important to find (and stick to) your sweet spots downwind.
Below are the generic one-design polars from the ORC VPP.
This is a good starting point. But you need to update them to match your own sail inventory and style of sailing. On the J/111 you need to get the planing speeds and angles right and if you carry a code sail, this will create a “bump” in the performance curve as well.
Here’s some tests with our code 0 (the small dots on the chart) and me trying to drag the curve to match the actual performance.
The only way to do it is to go out and sail, getting samples and updating your own polars. It isn’t rocket science and there’s several tools to help out. We use Expedition. It’s important to calibrate the instruments and be methodical in your approach. Take notes of your runs, either during races or 100% focused (eveyone hikes, helmsman & trimmers are concentrated etc) to be sure that you get quality data. Run each sail in 10 degrees intervals and in different conditions. It takes time, but after your first season you should have something really useful.
The additional bonus is that the whole crew is up to date with sail selection, sweet spots, cross overs etc that will lead to better performance.
Here’s the sail selection module in Expedition. All sails are mapped to TWA and TWS which allows Expedition to suggest the correct sail for the next leg.
Here’s some tuning guides from the big sailmakers. I also have some useful information from J/Boats and skippers that I’ll try to summarize in the near future.
Other ways to get a feel for performance is to analyze rating certificates. Above are the ORC ones that can be found on ORC Sailor Services.
In IRC there’s many more boats, with ratings ranging from 1.088 (IRC optimized, smaller spin, heavier) to 1.103 for some of the US boats. Below is short selection. For individual boats, go to ircrating.org.
GBR111N Jazzband 1.088
NED9111 Xcentric Ripper 1.087
FRA38221 Alphalink 1.090
BEL11111 Djinn 1.090
GBR8711R Icarus 1.090
GBR5811R Jeez Louise 1.090
AUS111 Jake 1.091
GBR7511R Munkenbeck 1.091
FRA62 J Lance 7 1.092
GBR7111L J-Dream 1.094
GBR2949L Oje 1.094
USA16 Partnership 1.095
GBR7611R Shmokin’ Joe 1.095
IRL7111 Wow 1.096
FRA38225 Le Jouet T 1.097
GBR8911R Manic 1.097
ITA4465 J Storm 1.098
USA11 Kontiki V 1.103
For a more complete list go to Le Jouet, run by Stéphane Blanchard. A good reference for J/111 information.
DesTopNews 2012-29
1. The Solitaire du Figaro
2. The Krys Ocean Race in Brest
3. The 470 EUropean Championship in Scotland
4. The 52 Super Series in Palma
5. And the Cork Week regatta in Ireland
OS-guide från SSF
För et som vill få lite koll på de svenska OS-seglarna så har SSF sammanställt en liten OS-guide.
Det skall bli intressant att se hur era tips från tidigare i år stämmer:
World Yacht Racing forum to Gothenburg
Ännu ett riktigt stort event till västsverige. Den här gången är det World Yacht Racing Forum som landar på Hotel Post i december. Konferensen samlar de flesta som jobbar med Volvo, America’s Cup och andra stora professionella event inom vår sport. Parallellt går som vanligt Yacht Racing Design & Technology Symposium.
Informa Yacht Group, organisers of the annual World Yacht Racing Forum, today announced the city of Gothenburg as host city of the 2012 edition of the Forum. The two-day conference will take place at the Clarion Post Hotel from 11-12 December. The Forum will also include the Yacht Racing Design & Technology Symposium, which will run as a parallel event on the same dates.
The Fourm has previously been hosted in Monaco and, for the last two years, in Estoril Portugal. However, as 2012 Conference Producer James Gradwell explains, it has been important to move the Forum to a new location;
‘As a global sport and industry, we have always wanted to give other cities the opportunity to host the World Yacht Racing Forum as well as offering different venues for delegates. There is a strong interest in yacht racing in Northern Europe and Gothenburg is no stranger to hosting large-scale yachting events including the Volvo Ocean Race. It is a fantastic city and we look forward to being there in December.”
Now in its 5thyear, the popular World Yacht Racing Forum is the leading annual conference for the global yachting industry. The two-day event gathers the sport’s key personalities and industry experts to discuss the business of yacht racing and key issues such as sponsorship, television, media, Olympics, new markets, host cities and much more.
The move to Gothenburg has been coordinated with Host Partner and Gothenburg based events agency Brandspot with additional support from the City of Gothenburg and the Clarion Post Hotel. As Brandpsot Managing Director Jan Torstenson explains
“We are delighted for the City of Gothenburg to host the World Yacht Racing Forum in December. The Forum is a very respected event for the professional yachting industry and I know all delegates and sponsors will be impressed with the hospitality that Gothenburg can provide. The Post Hotel, which just opened in January this year, is the ideal venue in the center of the City”
Filmer från Bohusracet
Här är några filmer från årets Bohusrace. Den första från White Star som har sammanfattat sitt race här. den andar från Primex som har en utförligare redogörelse på sin blogg.
Kanske finns det fler som jag har missat?
