Use of technical aids and brightness adjustment

At night or in reduced visibility, the vessel’s position relative to nearby shorelines and surrounding objects cannot be reliably determined solely by visual observation. In such conditions, navigation must be conducted using technical aids.

Brightness of technical aids to navigation and other light indicators on the bridge must be adjustable in intensity, visible in the dark, and capable of being fully dimmed. Equipment display and indicators should have minimal impact on night vision, and their brightness adapted to working conditions and crew needs. Light sources must be adjusted to prevent glare, reflections or “mirror” effects on windows and surfaces above control panels, ensuring that the crew can maintain undistracted and effective visual lookout.

Recipients: This safety lesson is for all navigators at sea.