...Catri and the older French tris used foil-assisted lifting on their forward system, never intending to fly completely out of the water.
You probably mean older
and latest French tris.
Most (if not all) Open 60 tris today use Bruce foils. The latest ones also feature rudder foils.
It seems that the Open 60s have been designed to sail in displacement mode. Judging by the size of their foils the lift provided is close to 20% to 25% of the displacement, which is not enough to plane.
I see the Catri as something different from the Open 60s:
1) It is a small cruiser, not a big racer.
2) It is designed to reach top speed without flying two hulls.
3) It has a unique stabilization system.
4) The amas are almost half in displacement (110% X more then 200%).
5) It folds.
I am not sure if they should be put together. They just look alike.
