The definitions of radio and navigation equipment, contained within SOLAS, the international Convention for the Safety of Life at Sea, as adopted by the International Maritime organization (IMO), led to the formulation and adoption of EN 60945. This lays down the “General requirements for maritime navigation and radiocommunication equipment and systems, methods of testing and required test results”. Other resolutions, adopted by the IMO, led to the introduction of performance standards.
These too have to be met, as appropriate to the type of equipment concerned. For example, speed and distance measuring equipment must meet the requirements of BS EN 61023, which specifies performance requirements, methods of testing and required test results. The latest edition of this standard also added a requirement for a serial interface, so that speed and distance data was readily available for transmission to other suitable shipboard equipment. Type Approval certification of specified equipment is also necessary before such equipment or systems can be marketed within the European Community. The Marine Equipment Directive (MED) covers all such equipment and lists all applicable standards to which such equipment must conform.
EN 60945 specifies that all maritime navigation and radiocommunication equipment must be able to withstand the specified limits of these environmental tests:
- Normal and low temperatures
- Dry heat and damp heat
- Rain, spray and water immersion
- Very high or low humidity
- Solar radiation
- Oil resistance
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