The cultures of South East Asia and Melanesia have known of slender hull technology for centuries and used it to populate the numerous islands of the Pacific Ocean. The technology probably grew from necessity and availability of materials rather than any concerted program of research, but nonetheless it's a technology that western civilisations only became aware of a few hundred years ago, and only began to adopt with any enthusiasm some fifty or so years ago. Less than the amount of time I've been alive on this planet.
Slender hulls have less resistance than fat hulls. They also have a more seakindly motion. If you use two or three of them together you have a stable platform with excellent seagoing characteristics.
DelaForm proposes that the configuration of these slender hulls can be further developed to take the technology to yet another level of improvement.