Abstract: Multiple level, horizontal parking lanes are provided with self park automotive access from intermediate drive lanes inclined transversely to the direction of automotive travel therealong.

Abstract: Porpoising control in a high speed planing hull is effected during straight, on plane running and in turning maneuvers by a novel configuration of aft tapered wedges bridging the aft, exit ends of the outboard and next adjacent, inboard running surfaces.

Abstract: A high speed open fishing boat construction has a hull portion, a top liner portion joined to said hull portion, and a fish live well assembly formed integral with the top liner portion and positioned so that its center of gravity is located on the longitudinal centerline of the top liner portion. The improvement comprises a common water inlet-outlet located in the rear of the hull portion, an aerator connected in the live well assembly for spraying water therein, a pipeline system connecting the inlet-outlet port with the aerator, and a remotely controlled cut-off control valve connected in the pipeline system for opening and closing water flow through the inlet-outlet port.