Der Code-0 ist eines der besten Beispiele für eine Segelentwicklung, die dann auch zum absoluten Muss für alle Clubregatten und Fahrtensegler geworden ist. Zuerst als "Regelbrecher" angesehen, tauchte diese "Topgenua" im Whitbread Race 1997 auf. Seitdem gehört dieses Segel zum festen Inventar aller Offshore und Einhand-Segler.
Der Bericht gibt einen Einblick in die Entwicklungen die in diesem Rennen zum Erfolg geführt haben:
We’ve also seen the development from race to race. To get an
insider’s view sat down with Henrik Søderlund from North Sails during
the stop-over in Lorient. Henrik is sail designer for Team Telefonica,
In an effort to keep costs down, there’s been some serious
limitations in the number of sails, both manufactured and carried on
board. But with fewer sails it becomes even more important to get the
absolute best sails. So many teams spent as much money this time, but on
CFD and wind tunnel testing, to be sure to get the best sails possible.
Henrik thinks the boats might even be faster around the globe this
time, despite having fewer sails in the inventory.
Also see my interviews with Michel Richelsen on CFD and the Wind Tunnel at University of Auckland who helped all the top teams.
A new approach to design
When we get into the sail development programs, it becomes clear that
the process have changed since Juan K entered the stage with ABN AMRO.
The traditional approach is to design a boat, a rig and late in the
process get the sail maker to design the best sails for that particular
boat. This has been the norm for many years.
Enter Juan K, who completely changed the rules.
- Let’s start with the engine, the sails that drive the boat. Take
the class rules and design the best sails possible within those
restrictions. Then I’ll design a boat that takes advantage of the
horsepower. This was a completely new way of thinking and let the sail
designers work without many of the restrictions they were used to. We
all know what happened. More stability, more power and faster boats.
New materials change the game
When I visited North Sails in Minden in 2010
they built the first 3Di sail for Puma Ocean Racing. Then they wanted
to see if it worked, and both Puma and Groupama tried to put 1500 hours
of sailing on their forst 3Di mains. Now 3Di is the norm. We see a few
Cuben sails, and Doyle on Sanya, but otherwise it’s 100% 3Di. It’s quite
a breakthrough when everyone moves to a new technology in a big event
First it’s a matter of durability. All sails held together well and
breakages were caused by “the human factor”. Also, a small damage seems
to be more containable and doesn’t spread as in other material. UV
doesn’t seem to be an issue and most sails are painted for commercial
reasons, which helps protect them. In earlier races the difference
between painted and non-painted sails were huge. When pushed, Henrik
thinks that the life span of a 3Di sails might be double that of earlier
- We’ve also been able to extend the range of each sail, especially
at the upper end. All sails look great when used in the middle of their
desired range, but when you approach the upper limit it’s another thing.
So we manage to get a bigger cross over with the next sail, that might
save the team a sail change.Managing the cross over’s between different sails (wind speed and
angle when it’s better to change to a different sail) is a big thing.
Having a narrow cross over in common conditions might mean many sail
changes that costs both time and energy.
And here we get into philosophy of the downwind inventory. Is it
about being around without any weaknesses or about being super fast in
certain conditions? Another delicate balance.
Three teams seems to be all-round; Groupama, Puma and Telefonica have
done their homework and are without any weak spots. There might be an
advantage for Groupama, as they seems to slip away in TWA 90 and TWS
14-18, knots but otherwise they seem to be able to match each other. Abu
Dhabi is geared more towards heavy downwind running, and Camper does
well when it’s more upwind.
With limited options it’s important to know you sweet spots and have
the guts to stick to them. It’s easy to get bought up in someone else’s
game and trying to beat them at their best angles.
An additional benefit when downwind sails are on a furling cables, is
that they require less trimming. A free luff sails needs to be trimmed
constantly, and collapsing the sail is costly. Now it’s more forgiving
and even if the top speed is lower, the average speed over time might be
Inshore all the teams is required to have a traditional free luff A2
that adds actions and look great on TV. “Colorful for the tourists” as
some call it. This is left ashore for the offshore legs, even if some
teams have thought of bringing it.
Then there’s a FR0, fractional zero in 3Di, typically 260-270 m2, a
MH0, mast head zero in 3Di, typically 330 m2. Finally a A2.5 or A3 at
maximum size 480 m2. This is either 3Di or Cuben and can be free luff
(Abu Dhabi and Sanya). Those sails are combined with spinnaker- and a
Den gesamten Bericht finden Sie hier: VO70 Downwind Sails