27.201—What are the requirements for general alarms on towing vessels?
(1)
Has a contact-maker at the operating station that can notify persons on board in the event of an emergency.
(3)
Has installed, in the engine room and any other area where background noise makes a general alarm hard to hear, a supplemental flashing red light that is identified with a sign that reads:
Attention General Alarm—When Alarm Sounds or Flashes Go to Your Station.
(b)
You or the operator may use a public-address (PA) system or other means of alerting all persons on your towing vessel instead of a general alarm, if the system—