Boaters! Power boaters!
Latest high efficiency boat concept, adopted by Malcolm Tannant, among others: high aspect ratio (length to beam) hulls on displacement cat. Cuts power requirements to reach planing speeds in half. Radical prismatic co-efficient. Cabin recessed on deck, not in, hulls. Fast, stable, efficient, improved ride, but a little pricey.
Cats are now in for medium speed power cruising. Stabilized monohulls coming on strong for high speed cost-no-object applications. Trimarans will make an entry with a big beam cruiser with hulls thinner than the cat. Four hulls, then two, three, then one. These designs are all competetive and one will never be exclusive in non-commericail design.