46 C.F.R. § 113.25-12 Alarm signals.
Title 46 - Shipping
(a) Each general emergency alarm signal must be an electrically-operated bell, klaxon, or other warning device capable of producing a signal or tone distinct from any other audible signal on the vessel. (b) Electronic devices used to produce the general emergency alarm signal must meet the requirements of subpart 113.50 of this part. (c) The minimum sound pressure levels for the emergency alarm tone in interior and exterior spaces must be 80 dB(A) and at least 10 dB(A) above ambient noise levels existing during normal equipment operation with the vessel underway in moderate weather. [CGD 94–108, 61 FR 28289, June 4, 1996]
Title 46: Shipping
PART 113—COMMUNICATION AND ALARM SYSTEMS AND EQUIPMENT
Subpart 113.25—General Emergency Alarm Systems
§ 113.25-12 Alarm signals.
