9 [ Antennae; ] high-frequency apparatus, namely, high frequency switchers for conducting electromagnetic survey in deep-water areas; remote control apparatus, namely, remote control telemetric machines and apparatus for electromagnetic survey in deep-water areas; electrical monitoring apparatus, namely, for monitoring electric current and electrical signals; electronic monitors and monitor modules for conducting electromagnetic survey in deep-water areas; electric apparatus for commutation, namely, apparatus for commutation in electromagnetic survey in deep-water area; detectors, namely, detectors for electromagnetic survey in deep-water areas; measuring instruments, namely, geophysical instruments measuring changes in conductivity of earth; switches, namely, computer switches, electrical switches and power switches; [ electronic signal transmitters; apparatus for recording time; ] distance recording apparatus, namely, for conducting electromagnetic survey in deep-water areas; nautical apparatus and instruments, namely, for conducting electromagnetic survey in deep-water areas for the purpose of measuring natural and artificial electromagnetic fields; apparatus and instruments for physics, namely, apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; measuring apparatus, namely, for conducting electromagnetic survey in deep-water areas for the purpose of measuring natural and artificial electromagnetic fields; electrical controlling devices, namely, for conducting electromagnetic survey in deep-water areas; recorded computer programs data processing in the field of natural and artificial electromagnetic fields; recorded computer programs for use in database management in the field of electromagnetic survey in deep-water areas; downloadable computer programs for use in database management in the field of electromagnetic survey [; electric control panels; data processing apparatus, namely, data processors; electric couplers being data processing equipment ]