9 Scientific, nautical, photographic, optical, weighing, measuring, signalling, detecting, testing, checking, life-saving and teaching apparatus and instruments, namely, access control and alarm monitoring systems for control and surveillance of vessel operation and safety; computer based systems, namely, computer hardware and recorded software for managing and optimizing energy flow on ships on board, offshore facilities and facilities for aquaculture; apparatus and instruments for recording and transmission of sound, data or images; downloadable and recorded computer programs for monitoring and controlling propulsion systems on ships, ship energy management, communication between ship and shore and for control of vessel powerplants, hybrid fuel cells and batteries; calculators; computers and computer peripherals; electrical control panels; electrical switches; electric circuits; electrical junction boxes; electronic navigation instruments, namely, GPS navigation devices; electronic navigation, alarm, monitoring and control apparatus for ships, namely, navigation apparatus for ships, alarm sensors, pressure sensors, ultrasonic sensors, radar sensors, alarm monitoring systems and electronic control systems for engines, fuel cells, batteries and tank levels; frequency converters; electric frequency converters; high frequency converters; electrical panels, namely, electric control panels; all of the aforementioned goods limited to maritime installations, including ships, offshore installations and installations for aquaculture, with associated power supply systems on land