That is a really interesting cruising cat concept. I can't believe it would be quite as efficient as a sloop rig but the sail / foil handling with that system would be really easy to single hand.

The write up on their website was pretty interesting.

I remember me that maybe 15 years ago there was a guy in Holland who tried exactly the same design on a beach cat. But then with 1 mast and one sail ; so the mast was aft. His name is Nol Twigt, but I can't find a picture anymore in my old magazines.

I presume it was not a succes because I never heard or saw anything about his cat anymore
You can also contact his brother Fredjan Twigt.

I think the concept objective was to make it easier to reef/depower more quickly and effectively than a huge main that many large cruising multihulls have.

It looks like a regular jib and a small wingsail main to me...

I wonder how the trailing sailplan is affected by the windward or forward sailplan (turbulence, etc)

I must admit that when pondering 4 years ago about what cat I should build, this design crossed my mind for the same reasons (simple roll system).

I saw also benefits for the back-stays instead of side-stays and the trapeze-wires should also hang more just in the same level as the mast. So the hang on broad reaches should be more comfortable.

Besides that, on broad reaches the sail could act as a genoa with easy possibilities to switch to a full spinnaker.
And for instance also uprighting after a capsize would be much simpler.


But I had too much questions about real-life working and the efficiency of the sail concept and I didn't dare the experiment.