9 Scientific, nautical, geodetic, photographic and optical apparatus and instruments and apparatus and instruments for measuring, signaling in the nature of supervision and teaching, namely, underwater cameras, electric navigational and positioning apparatus and instruments, motion sensors, marine level switches, marine pressure transmitters, marine temperature sensors, radar based tank gauges, sensor simulators, signal converters, and wireless temperature monitoring devices; apparatus and instruments for recording, transmission and reproduction of sound or images; blank magnetic data carriers; data processing equipment and computers; complete control stations and systems for vessels comprised of instruments in the nature of integrated workstations for ship bridges, and downloadable, recorded computer software for dynamic positioning, computer joystick peripherals; electronic control units comprised of electronic sensors, electronic switches for thrusters, machine automatization and load control, radar maps and command screens, touch screens and panels and alarms; conning bridge equipment, namely, electronic control panels for controlling deck lights, windscreen wipers, navigation lights and searchlights