9 Nautical and optical apparatus and instruments, namely, sensors for the determination of temperatures, positions, distances, wind speed and direction, wave height and direction, water depth, engine power and RPM, fuel consumption and levels, accelerometers, wave gauges, bending moment sensors, gyrocompasses, gyroscopes, motion reference units, wind and draught sensors, optical frequency metrology devices; apparatus and instruments for weighing, measuring, signaling, checking, life saving and teaching, namely, remote fuel oil level sensing system, meteorological instruments, sensing and signaling devices for dynamic positioning of ships, for onboard ship analysis and reporting of voyage related data, and for measurement of ship hull motion and acceleration, current sea state and wave motion, parametric roll, and ship hull load; blank magnetic data carriers and blank optical discs; computers; recorded and downloadable computer programs for ship voyage planning, navigation, and to minimize ship fuel consumption and avoid adverse weather conditions and adverse ship motion, for ship route optimization with respect to speed, travel, time and ship performance, for ship route distance and fuel consumption calculations; data processing apparatus; navigation apparatus and instruments, namely, global positioning system (GPS), programmable logic controller (PLC), computer, computer software, transponder, transducer, transmitters, receivers, interfaces for computers, and interfaces for detectors