New Clubswan 125 curved daggerboards

Hello everyone,
I am currently trying to understand the new design of the curved daggerboards for the the new ClubSwan 125 to be launched in 2019 designed by JuanK Studio.

I would really apreciate if someone could share some knowledge or opinion about this curved daggerboards which somehow can be completely hidden inside the hull.

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THANKS

 

The curved board develops all the lateral resistance for the boat in addition to providing some vertical lift for foil-assist. Foil-assist can reduce the wetted surface of the boat and may add some righting moment*. The daggerboard is required with the canting keel since, when canted, the keel develops very little lateral resistance.
Curved boards have been used on racing monohulls as well as on catamarans and trimarans for many years.
*depending on the position of the center of lift relative to the boat CG.

 

thanks for the answer.
but from the desing point of view,
if they have the size to be retracted and completely hidden inside the boat, how can they have enough size to generate all the lateral force required (for a 125ft)?? taking into account that for the structural resistance of the foil, it cant reach the edge (some part of the foil should always stay inside)

 

The board is curved-so is the trunk- which will allow a longer board to be stowed inside as compared with a straight board. Is there some reason the board can't come up through the deck? The render doesn't look very detailed to me-perhaps some elements are missing?

 

I suppose it doesnt come out throught the deck for aesthetic reasons.
but when it is deployed underwater , I think there should always be a big part of it that remains inside.
thats why I think there is not enough lenght for the board.(asuming at least 1 meter or more that is always inside)

 

It might be one long board that shuttles right on through. Some of it can always be sticking out that way.

 

I just discovered the Club Swan 36 designed by Juan K-it's here along with a video describing the foil system which is probably the same on the big boat. On the 36 it is one long curved foil that slides side to side. It can stick down a lot and develop vertical lift with lateral resistance or lateral resistance alone. Watch the video on the 36 here:
Foil Assist Monohulls https://www.boatdesign.net/threads/foil-assist-monohulls.60502/