Maintenance and repair of ships, vessels and machine installations; installation and repair of electrical apparatus, computer equipment, audio and video equipment, telephony and radio communication equipment, navigation equipment, ships radars, computer networks and computer peripherals

Antennas for vessels and ships; computers and recorded programs for computers for machine and bridge control on vessels and ships; electrical installations for remote control of machine and bridge operations on vessels and ships; electro-dynamic apparatus for remote control of signals, namely, signal condition and communication devices for machine and bridge control on vessels and ships; amplifiers, namely, tube and radio amplifiers; high-frequency apparatus, namely, high frequency switches; ...