Descriptors | Ships, Navigational measurement, Marine instruments, Electrically-operated devices, Marine navigation, Navigation, Protected electrical equipment, Electrical equipment, Water transport engineering components, Water transport engineering, Performance, Performance testing, Type testing, Control devices, Electric power system disturbances, Voltage fluctuations, Noise (spurious signals), Electrical safety, Electromagnetic radiation, Safety measures, Maintenance, Handbooks, Marking, Testing conditions, Environment (working), Environmental testing, Dry-heat tests, Damp-heat tests, Low-temperature testing, Thermal testing, Vibration testing, Watertightness tests, Fungal-resistance tests, Corrosion tests, Salt-spray tests, Radio disturbances, Noise (environmental), Symbols, Graphic symbols, Radiation hazards, Marine safety |