Abstract: The present invention provides a molded boat hull with a novel structural stiffening system. The boat hull has a number of laterally positioned compartments molded into the inner shell with vertical partitions that are integrally welded to the outer shell and are interconnected to each other and to the transom. A keel plate and a transom support are molded into the transom, the inner wall, and a bridge along the longitudinal center line of the boat. A keel support beam is placed along the keel, connected to the keel plate, and adhered into a channel in the boat hull inner shell. A pair of stringer braces is assembled between the integral stringers to provide transverse stiffness of the boat hull.

Abstract: The present invention entails an outboard power unit comprising an upper drive train compartment, a lower propeller housing, and a pair of laterally spaced connector housings connected between the upper drive train compartment and the propeller housing. An internal propeller assembly is mounted within the lower propeller housing and driven by a flexible drive that is trained around the propeller assembly and extends through the laterally spaced connector housings where the flexible drive is trained around a driven member housed within the upper drive train compartment.

Abstract: In order to sense the level of oil in a tank coupled through a line to an engine, and to give a warning when the level is low, a detector is provided which includes a pipe section interposed in the line and passing through a chamber. Openings in the pipe section cause the oil to leak into the chamber to form a pool therein. Resting on the pool and rising and falling therewith is a float having a magnet therein. When the oil level is low, the magnet is brought into the proximity of a reed switch at the bottom of the chamber, the switch then being actuated to close an alarm circuit.