Seismic was to show that the Mac hardware has the means to get info on pitching and yawing as well as acceleration.

As for the Cantana, I believe it was a C - 45 boat name Flash that they said they have to furl their daggerboards to accept leeway or the boat ends up breaking them. Charlier confirmed that on the 45 that was the case but i don't know about the others.

And the type of AP choosen does depend on the boat as you've indicated. So a good part of the discussion has been about boat speed and to some extent surfing ability. Be that as it may I'll watch more for a good "reasonable" below decks AP for a backup. Maybe in New Zealand. Doubt it will happen before we head across the canal next spring/summer. To much in the works already.

Caio