<img src=" http://www.madforsailing.com/SAIL/A...
It looks like this boat has the same concept as the Catri trimarans - interesting concept to avoid nose-diving in high-power situations. The lift from the foils on the bow reduces the amount of bouyancy (and drag) you need from the leeward bow.
![[Linked Image]](http://www.multihull.de/catrimarine/y30-fig3.gif)
You can find Catri at http:/
Sail fast and have fun,
Alan Thompson
I20 - San Diego
Nice photo!
Some of the new Open 60 tris have two sets of daggerboards: the regular ones and the inclined assimetric daggerboards(Bruce foils) forward of the mast. Those are intended to provide an additional safety against pitchpoling (the lift raises the bow), but not exactly to reduce the wetted surface, as in the Catri (although they do it, to a certain extent)
I understand that in this case, the vertical and inclined daggerboards are used separetly because one interferes with the other.
The interesting thing In the posted photo is that Groupama uses ONLY the inclined daggerboard as the Catri, but positioned aft of the mast. Also, the foils are less inclined then those of the Catris, thus providing less lift. I wonder if it has a central hull daggerboard too. Actually, It would be very interesting to see the complete plans of all these wonderful Open 60s - there even one with curved daggerboards, with a winglet in the end! Does anyone know where to find their plans in the net?
By the way, there are more Catri pages:
In the US check www.aegeanmarine.com and in Brazil www.ventair.com.br (but the English version is not ready yet, only parts in Portuguese and parts in Spanish)
Luiz
Secretary Gilles Cambournac
President Jacques Lehn
OCEAN RACING MULTIHULL ASSOCIATION
18 Cours des Quais
56470 La Trinite-sur-Mer
FRANCE
Tel: + 33 2 97 55 76 92
Fax: + 33 2 97 30 12 80
Email: jacques.lehn@libertysurf.fr
Web Site: www.orma-60.org
On the website link, Great Photos of these tri's flying 2 hulls, the boat, 'bisquit la trinitaine', looks as though its daggerboard on the center hull is leaning toward leeward. It must be adjustable, maybe to help provide some lift to the center hull?
The center hull daggerboard in that photo is inclined to the back, not to any side. You can see that the rudder is exactly in the same trail left by the board and this would not happen if the daggerboard was tilted.
Now that I checked the photos with more detail, Banque Populaire and Fujifilm also show a variation of the inclined assymetric daggerboards, only they are curved and, in the case of Banque Populaire, have a winglet in the bottom!
It looks like many new boats are starting to use them. I am happy to have followed the right trend!
Luiz