5.2.5 Illumination and Lighting
A satisfactory level of lighting should be available to enable the bridge personnel to complete such tasks as maintenance, chart and office work satisfactorily, both at sea and in port, daytime and nighttime.
5.2.5.1 Dark Adaptation
Red or filtered white light should be used to maintain dark adaptation whenever possible in areas or on items of equipment requiring illumination in the operational mode. This should include devices in the bridge wings.
5.2.5.2 Luminance Contrast
High contrast in luminance between work area and surrounding should be avoided, i.e. luminance of the task area should not be greater than 3 times the average luminance of the surrounding area.
5.2.5.3 Flexible Lighting System
The lighting system should enable the bridge personnel to adjust the lighting in brightness and direction as required in different areas of the bridge and by the needs of individual devices. The following table lists the recommended general illumination:
5.2.5.4 Light Dimming
A light dimming capability should be provided.
5.2.5.5 Glare Avoidance
Care should be taken to avoid glare and stray image reflections in the bridge environment. All prepared surfaces should be glare free.
5.2.5.6 Lighting Sources
Lighting sources should be designed and located to avoid creating glare from working and display surfaces.
5.2.5.7 Reflection in Windows
Reflection in windows of devices, instruments and consoles and other reflective enclosures should be avoided.
