4.2.1 A general emergency alarm system should
be provided. The alarm should be audible throughout all the accommodation
and normal crew working spaces and open decks, and the sound pressure
level should be at least 10 dB(A) above ambient noise levels underway
in normal cruise operation. The alarm should continue to function
after it has been triggered until it is normally turned off or is
temporarily interrupted by a message on the public address system.
4.2.2 There should be a public address system
covering all areas where passengers and crew have access, escape routes,
and places of embarkation into survival craft. The system should be
such that flooding or fire in any compartment does not render other
parts of the system inoperable.
4.2.3 All passenger craft should be equipped with
illuminated or luminous notices or video information system(s) visible
to all sitting passengers, in order to notify them of safety measures.
4.2.4 The master should, by means of 4.2.3, be
able to request passengers "please be seated" when he finds this appropriate
to safeguard passengers and always when the safety level 2 according
to table 1 of annex 3, is exceeded.
4.2.5 Emergency instructions including a general
diagram of the craft showing the location of all exits, routes of
evacuation, emergency equipment, life-saving equipment and illustration
of lifejacket donning should be available to each passenger and placed
near each passenger's seat.