This standard is applicable to the sound and light signals and signs inside the ship related to the safety of passengers, crew, ships and equipment, and for the color of the light signal, flash frequency and sound alarm indicated when the ship's engine room equipment is in an abnormal state during operation and control. etc. are also stipulated. This standard does not apply to acousto-optic signals used for navigation between ships or between ships and shores.
GB 9193-1988 history
2005GB 9193-2005 Acoustic,optical alarm signals and identifying indications in ships
1988GB 9193-1988 Acoustic, optical alarm signals and identifying indications in ships