Planing type speed boat hull

Claim 1

A SPEED BOAT HULL OF THE PLANING TYPE WHEREIN THE HULL BOTTOM IS PROVIDED WITH A PAIR OF BOW STEMS SPACED INWARDLY FROM THE SIDES OF SAID HULL AND SPACED LATERALLY FROM EACH OTHER AND EACH OF SAID BOW STEMS HAS, ADJOINING AND EXTENDING REARWARDLY THEREFROM, A PLANING SURFACE WHICH HAS A SUBSTANTIALLY FLAT PORTION, WHICH COMPRISES: AN ELONGATED WALL EXTENDING UPWARDLY FROM THE INNER EDGE OF EACH OF SAID PLANING SURFACES, A CENTRAL, LONGITUDINALLY EXTENDING TUNNEL DEFINED BY SAID WALLS AND THE ASSOCIATED BOW STEMS, AND HAVING AS A ROOF THE BOTTOM OF SAID HULL, A TUNNEL-DIVIDING AND PLANING MEMBER PROJECTING DOWNWARDLY FROM THE ROOF OF SAID TUNNEL AND EXTENDING LONGITUDINALLY AND CENTRALLY OF SAID TUNNEL FROM THE STERN OF SAID HULL TO A FORWARD POINT ADJACENT THE AREA WHEREIN SAID BOW STEMS ADJOIN SAID PLANING SURFACES, SAID MEMBER HAVING SIDES THAT ARE INCLINED WITH RESPECT TO THE ROOF OF SAID TUNNEL AND TO THE BOTTOM OF SAID MEMBER, SAID SIDES AND SAID BOTTOM OF SAID MEMBER, AT THE FORWARD END OF SAID MEMBER, TERMINATING IN SUBSTANTIALLY A POINT, AND SAID BOTTOM OF SAID MEMBER BEING FORWARDLY AND UPWARDLY INCLINED FROM A PLANE SURFACE AT THE STERN OF SAID HULL LYING BELOW THE LOWEST POINT OF SAID PLANING SURFACES, AND SAID TUNNEL BEING FREE FROM PROJECTIONS THEREINTO OTHER THAN SAID MEMBER AND BEING SUBSTANTIALLY UNIFORM IN WIDTH FROM THE STERN FORWARDLY FOR MORE THAN HALF ITS LENGTH.