M/557 - Marine equipment

This standard describes requirements, performances and test-procedures for Public-Address-Systems (PA) and General-Alarm (GA) Communication-systems for marine applications. The standard is focused on all necessities to get a harmonized standard for marine PAGA Com. The standard refers as much as possible to relevant established standards. Where relevant standard do not exist or are not precise enough, this standard will describe additionally own definitions , requirements performances and test-procedures