46 CFR §113.50-10
Each passenger vessel must have a public address system capable of broadcasting separately or collectively to the following stations:
- (a)Survival craft stations, port.
- (b)Survival craft stations, starboard.
- (c)Survival craft embarkation stations, port.
- (d)Survival craft embarkation stations, starboard.
- (e)Public spaces used for passenger assembly points.
- (f)Crew quarters.
- (g)Accommodation spaces and service spaces.