A bathyphotometer system is described for detecting photoluminescent signals excited by a grid disposed in a marine vehicle. The diode includes a cathode that has a recessed region and a dielectric interface surface that laterally extends around a perimeter of the recessed region. The mounting fixture permits the surface mounting of the laser device to wheels having camber angles within a normal range of deviance. The method starts a background application on the system. The system may present query refinement options, the query refinement box being populated with the prior search queries as suggested queries for possible selection by a user, the identified possible spelling corrected search queries, and the received query completion suggestions.