The object of this invention is to provide a prefabricated boat consisting of a reinforced plastic boat body, and a rubber tube detachably attached along each side of the body to give buoyancy to the body. The module includes an optical component and relative reference mount. This circuit is of use in electronic brake force or driving dynamics controllers for motor vehicles. Fiber-channel identifiers are assigned to the servers in response to the logon requests to provide single end-host operations for each of the servers. , an aluminum alloy film, and slit-like openings are formed in the second electrodes 50 to allow passage of light emitted from a backlight device 9. The panels may be substantially planar in shape.