SCHWINGE HYSWAS TETRAHEDRON SUPERYACHT In NON-TECH, Tools by Edgar ArroyoFebruary 18, 2016Leave a Comment t looks like something you’d see in outer space, not in the ocean ? but make no mistake about it, the Schwinge Hyswas Tetrahedron Superyacht concept is grounded in logic that could see it cruising the seas in the near future.