5.2 Presentation of information
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Resolutions - Maritime Safety Committee - Resolution MSC.128(75) - Performance Standards for a Bridge Navigational Watch Alarm System (BNWAS) - (adopted on 20 May 2002) - Annex - Recommendation On Performance Standards For A Bridge Navigational Watch Alarm System (BNWAS) - 5 Ergonomic Criteria - 5.2 Presentation of information

5.2 Presentation of information

  5.2.1 Operational mode

 The operational mode of the equipment should be indicated to the OOW.

  5.2.2 Visual indications

 The visual indication initiated at the end of the dormant period should take the form of a flashing indication. Flashing indications should be visible from all operational positions on the bridge where the OOW may reasonably be expected to be stationed. The colour of the indication(s) should be chosen so as not to impair night vision and dimming facilities (although not to extinction) should be incorporated.

  5.2.3 First stage bridge audible alarm

 The first stage audible alarm which sounds on the bridge at the end of the visual indication period should have its own characteristic tone or modulation intended to alert, but not to startle, the OOW. This alarm should be audible from all operational positions on the bridge where the OOW may reasonably be expected to be stationed. This function may be engineered using one or more sounding devices. Tone/modulation characteristics and volume level should be selectable during commissioning of the system.

  5.2.4 Second and third stage remote audible alarm

 The remote audible alarm which sounds in the locations of the Master, officers and further crew members capable of taking corrective action at the end of the bridge audible alarm period should be easily identifiable by its sound and should indicate urgency. The volume of this alarm should be sufficient for it to be heard throughout the locations above and to wake sleeping persons.footnote

Parent topic: 5 Ergonomic Criteria
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