6 Visual Presentation of Indicators and Calls
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Statutory Documents - IMO Publications and Documents - International Codes - Code on Alerts and Indicators, 2009 - 6 Visual Presentation of Indicators and Calls

6 Visual Presentation of Indicators and Calls

  6.1 Supplemental visual indicators and calls provided in machinery spaces with high ambient noise levels and in accommodation spaces should:

  • .1 be clearly visible and distinguishable either directly or by reflection in all parts of the space in which they are required;

  • .2 be of a colour and symbol in accordance with tables 7.1.1 to 7.1.3;

  • .3 flash in accordance with 6.2. Instead of individual flashing lights a single flash or rotating white light in addition to a permanent individual indication may be used for light columns;

  • .4 be of high luminous intensity; and

  • .5 be provided in multiples in large spaces.

  6.2 Flashing indicators and calls should be illuminated for at least 50% of the cycle and have a pulse frequency in the range of 0.5 Hz to 1.5 Hz.

  6.3 Visual indicators on the navigation bridge should not interfere with night vision. For the visual presentation of alerts on the navigation bridge the requirements of resolution MSC.191(79), module C of resolution MSC.252(83), where applicable to ships with Integrated Navigation Systems (INS), and, where fitted, the requirements of a bridge alert management system, should be observed.

  6.4 Indicators should be clearly labelled unless standard visual indicator symbols, such as those in tables 7.1.1 to 7.1.3, are used. These standard visual indicator symbols should be arranged in columns for ready identification from all directions. This applies in particular to the emergency alarms in table 7.1.1. Standard visual indicator symbols may also be used on consoles, indicator panels, or as labels for indicator lights.

  6.5 Indicator colours should be in accordance with ISO Standard 2412, as deemed appropriate by the Administration. Indicator colours on navigational equipment should be in accordance with resolution MSC.191(79), paragraph 5.7.

  6.6 On mobile offshore drilling units (MODUs), where supplemental visual indicators are installed for general emergency alarms, the colour of these supplemental indicators may be amber, provided they flash with a pulse frequency of at least 4 Hz.

Parent topic: Code on Alerts and Indicators, 2009
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