2015 IMOCA 60-Foil Assist

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I'm not so sure about that, Nick: the boat doesn't uses rudder foils so it is depending on partial immersion of the hull for pitch control. But it won't be long now......

 

2015 IMOCA-Saffran

"Self-righting" test for Saffran:
https://www.youtube.com/watch?v=1-kdlUxg2KI

 

2015 Imoca-sma

SMA launch: https://www.youtube.com/watch?t=196&v=DHIWdVFmSE8

 

foils

yep, that's true, I missed that Doug, you are correct!

I wonder why? risk that it wouldn't work? Crash loads too extreme?
excited to see what happens anyway, and whether the class does in fact go full foiling - that would be something to behold! foiling with a canting keel, your dream!

Even if it was a skimmer, you would think that a trimmable rudder foil would give you a lot of options - like the option to not use aft water balast tanks etc. However I can think of some practical problems too, like making it more difficult to kick the rudders up, loading the rudders, more prone to breakage etc.

In the moth class, before foilers when the narrow skiffs had fixed t-foil rudders, I always reflected that they would have benefited greatly from having some adjustment in the rudder gudgeons like moths have now. So many pitch poles could have been avoided! When you sail a moth now as a low rider, it's great having that extra control.

Anyway to anyone out there who has a sports boat and wants to make it foil, I reckon the laterally sliding J foil concept has serious legs. Extra RM + safety of a V shape foil + exaggerated leeway effect + relative structural simplicity + low altitude foiling + twin T-foil rudders = potential!

 

^SMA
am I right in saying that's a fast looking boat with conventional, straight daggerboards? no DSS?
Edit - I think I see tops of daggerboard cases a long way outboard of bottoms, so inward inclined, lifting boards i.e Comanche
proven concept, will Safran be faster?

 

IMOCA 60 Foil Assist

From Scuttlebutt Europe today:

IMOCA 60s To Test Their New Foils In Rolex Fastnet Race

One reason the Rolex Fastnet Race is the world's biggest offshore yacht race - at present 390 boats are entered - was the decision of the Royal Ocean Racing Club to include non-IRC offshore classes: Volvo Ocean 65, the Class40, IMOCA 60, Multihulls, the latter three have their origins or being most popular in France.

The IMOCA 60s' participation this year will be particularly special as it will be the first time some of the newest generation boats destined for next year's Vendée Globe will line up. Of the 13 IMOCA 60s racing, four are new, built to the latest iteration of the IMOCA rule requiring one design masts and keels. But their most discussed feature is their giant new L-shaped foils, designed to not only to in prevent leeway, but also to operate like Dynamic Stability System-style foils, ie protruding from the leeward side of the boat to create vertical lift, added righting moment and ultimately enhanced performance.

All four boats are VPLP-Verdier designs: Banque Populaire and Hugo Boss, of Armel le Cleac'h and Alex Thomson respectively, who finished in second and third place in the last Vendee Globe; St Michel-Virbac of two time Barcelona World Race winner Jean-Pierre Dick and the latest Safran, sailed by the team's new skipper Morgan Lagravière.

fastnet.rorc.org

 

IMOCA 60 Foil Assist

2015 Foiling Week presentation by VPLP on their new IMOCA foils:
http://www.boatdesign.net/forums/hydrodynamics-aerodynamics/foiling-week-50888.html#post746827

Photo of Saffran(VPLP) by Jean Marie Liot:

 

2015 IMOCA Foil Assist

These boats may need rudder foils! Lots of LIFT-check out these pictures:
http://www.gitana-team.com/fr/event.photos.aspx?eventid=99&albumid=343

 

Leeboards have come of age. Brilliant photos.

 

IMOCA Testing

Model testing of an IMOCA 60 design:

 

2015 IMOCA Foil Assist

Fantastic video: https://www.youtube.com/watch?v=E3on5CYbZP4

 

2015 Imoca 60

The designers on the new IMOCA foils: http://www.vendeeglobe.org/en/news/article/14914/foils-on-the-imocas-what-the-designers-think.html

 

2015 Imoca 60

Cool video thanks to wavesails: https://www.youtube.com/watch?v=mGpWPSbbbJo

 

IMOCA 60 Foil Assist

Hugo Boss launched and they have a different foil compared to the others: