Catamarans do a "modified" roll tack. It is the same principle as a roll tack for monohull dinghies, but we can't exactly "roll" the way they do. In our case it is more of a "rock" than a "roll."

Anyway, the technique and the term came from the monohulls. If you ever see a Laser doing a roll tack in light air, you will definitely understand what it means.