A personal watercraft includes: a watercraft body made of a resin; a handle projecting upward from the watercraft body; a meter display device disposed above the watercraft body and forward of the handle; a meter cover made of a resin and covering a space from above, the space being adjacent to and forward of the meter display device and being in contact with an upper surface of the watercraft body and a forward surface of the meter display device; and an antenna disposed in the space.

An aerodynamically optimized drag-reduction appartus and method for optimal minimization of the drag-induced resistive forces upon a terrestrial vehicle, where the drag-induced resistive moments on wheel surfaces pivoting about the stationary point of ground contact are reduced, and the vehicle propulsive forces needed to countervail the resistive forces on the wheel are reduced. The drag reduction apparatus includes: a streamlined fairing or wind deflector positioned on a vehicle to shield the faster moving upper wheel surfaces from headwinds; an engine exhaust pipe disposed on a vehicle whereby exhaust gases deflect headwinds to shield the faster moving upper wheel surfaces of an automotive wheel; an automotive spoked wheel having streamlined oval-shaped wheel spokes; a wheel assembly with a streamlined tailfin rotatably attached to a wheel spoke; a wheel with a tapered spoke having a thin aerodynamic profile near the rim and tapering to a round profile toward the central hub; and a tire having streamlined tread blocks arranged in an aerodynamic pattern.

A longitudinally tapered wheel spoke having a thin aerodynamic cross-sectional profile proximate to the wheel rim and tapering to a round profile toward the central hub, with the tapered section optimized to minimize drag against a combined headwind and crosswind impinging upon the primary vehicle-drag-inducing uppermost region of the wheel assembly.

An overboard tracking device is an apparatus which facilitates the location of individuals wearing Personal Flotation Devices (PFDs) or similar survival devices in a body of water. The apparatus includes a prismatic buoyant housing, a power source, at least one switch, a controller, a transceiver, a thermionic layer, an antenna layer, and a waterproof casing. The prismatic buoyant housing maintains the apparatus above water. The power source provides power for the operation of the apparatus. The at least one switch enables manual or automatic activation or deactivation for the apparatus. The controller processes the data and signals received from external radar sources. The transceiver facilitates the sending and receiving of radio wave signals to/from external radar sources. The thermionic layer generates the power stored in the power source. The antenna layer transmits radio waves from/to the transceiver. The waterproof casing prevents contact of the electronic components with water.

An overboard tracking patch is an apparatus which increases the visibility and tracking capabilities of Personal Flotation Devices (PFDs) for more efficient tracking of overboard individuals. In a passive embodiment, the apparatus includes an outer layer, an intermediate layer, an attachment layer, and a processor. The outer layer increases the visibility of PFDs during both daytime and nighttime conditions. The intermediate layer provides radio identification capabilities for the remote tracking of PFDs using search radars. The attachment layer enables users to attach the present invention to a PFD. The processor stores PFD information and other identification data. In a hybrid active-passive embodiment, the apparatus also comprises a thermionic layer and a power-storage layer. The thermionic layer generates power due to the heat exchange between the body of the user and the thermionic layer. The power-storage layer serves to store power generated by the thermionic layer to power up the processor.

An aerodynamic tailfin rotatably attached to a shaft-shaped member disposed on a vehicle. The tailfin swivels about the round shaft-shaped member for reduced drag in response to winds varying in direction impinging thereon.

A minimal fairing apparatus minimally shielding the faster-moving drag-sensitive uppermost wheel surfaces from headwinds reduces overall vehicle drag. The apparatus includes various upper wheel fairings of FIGS. 1-6. Each fairing shields a primary vehicle-drag-inducing upper wheel surface from headwinds otherwise impinging thereon.

A device for detecting a fall of and for geolocating a container that has gone overboard that includes an electronic box and a means for removably attaching the electronic box to an external part of the container is disclosed. The electronic box includes a means for detecting the container's fall, a control unit controlling the removable attachment means in the event of the detection of the container's fall and disconnecting the electronic box from the external part of the container, a flotation means for floating the electronic box on a stretch of water, a geolocation module, a data communication means, a means for powering the control unit, a link for maintaining a permanent connection between the electronic box and container when the box is disconnected from the container. This allows detection a container falling into the sea and to communicate its geographical position with a view to towing thereof.

A substantially hollow wingsail is configured to enable electrical components to be situated within the wingsail. In particular, the wingsail may be configured to contain the solar panels used to power the other electrical components of the vessel, as well as other items that are conventionally situated on the exterior of the vessel, such as antennas, navigation lights, and so on. The surface of the wingsail may include transparent or translucent areas to provide light to the solar panels, as well as optical and electromagnetic reflective areas within the wingsail to enhance the performance of the solar panels and antennas. The wingsail may also include an internal light that illuminates the translucent areas of the wingsail for enhanced visibility to other vessels.

A method of locating an underwater based system, the method including determining the underwater based system's geo-location, encoding the underwater based system's geo-location for RF transmission, encoding the underwater based system's geo-location for acoustic transmission, and transmitting RF and acoustic signals containing the encoded geo-location to a receiving station. A locator for locating an underwater based system including a buoy, a global positioning system having an antenna and a receiver, an RF transmission system including an antenna and a transmitter, an underwater acoustic transducer, and a locator control unit adapted to determine the underwater based system's geo-location, encode the underwater based system's geo-location for RF transmission, encode the underwater based system's geo-location for acoustic transmission, and transmit RF and underwater acoustic signals containing the encoded geo-location.