Abstract: A self-balancing marine compass. A described embodiment includes a pivot assembly, a buoyant-magnetic chamber assembly, a reading card assembly, and a dome. The pivot assembly includes fulcrums, each of which fit within fulcrum holders located on an inner surface of the reading card assembly. The buoyant-magnetic chamber assembly is positively buoyant within the dome and includes pivots meeting with pivot axes of the fulcrum holders. This embodiment is also a no spin compass.

Abstract: A marine in line bilge blower and a method of manufacturing same are described. The blower, or fan, includes a housing in which a motor, airfoils, a fan wheel hub, and straightening vanes are positioned. Specifically, numerous airfoils are positioned on a fan wheel hub, which is in connection with a motor. The motor is mounted on one of several straightening vanes. The housing includes a base with a pair of feet. To protect the circumference of the housing from physical and thermal stress, strengthening rings are positioned on the circumference.

Abstract: A forced air heater using self-pressurizing fuels such as propane or butane to drive the blower incorporates an overheat dump port to provide an auxiliary exit for the hot air in the event that the normal outlet becomes obstructed. Also included are means for removing condensation from the fuel conduit, for preheating the fuel source, and for continuing to warm the fuel source and fuel conduit to improve operation of the forced air heater in cold environments. The overheat dump port also provides access into the heater for the high voltage conduit of a spark generator for igniting the fuel within the need for insulating the high voltage conduit.