Marine Instruments, measurement instruments, signal instruments and apparatus, namely, compasses, satellite directional compasses, antennas, speedlog, namely, electronic data logger for measuring and storing speed data, speedometers, speed indicators, echo sounders, radar transponders, wind speed system, namely, sensors determining wind speed and direction, measuring gauges for determining wind speed, voyage data recorder, namely, electronic recorders for use on vessels for storing and archiving information from sensors onboard the vessel, ECDIS, namely, electronic sea chart, namely, electronic navigational and positioning apparatus and instruments, MF/HF/VHF communication system compromised of medium frequency, high frequency and very high frequency aerials, broadband and satellite communication system compromised of broadband and satellite radios, internal communication systems, namely, electronic and optical communications instruments and components, namely, optical transmitters, optical receivers, optical data links, optical transceivers, electronic ship security alert system compromised of security and fire alarms, anti intrusion alarms, fire detection systems compromised of fire and smoke detectors, rudder angle indication system compromised of rudder angle indicators, navtex, namely, electronic navigational instruments, teletypewriters that communicate via telephone lines to deliver navigational warning and forecasts, weatherfax, namely, facsimile-transmitting and receiving apparatus for delivering meteorological warnings and forecasts

Secretarial work, namely, secretarial services

Maintenance, repair and installation work within the profession of shipbuilding, as well within the profession of electricity, namely, on board repair jobs, namely, ship repair, repair of boilers on ships, annual overhauls, namely, annual ship maintenance, replacement of spare parts and consumables or wearing parts of ships, namely, water filters and water filtration apparatus, ship engines, conditioning and heating equipment, plumbing and electrical systems, and appliances

Design and development of computer hardware and software