Navigation Light SystemFeeder Navigation lights (mast head, side and stern lights) are to be fed by their own exclusive distribution board located on the navigation bridge. The distribution board is to be supplied from the main as well as from the emergency source of power. A means to transfer the power source is to be fitted on the navigation bridge. Branch Circuit Each navigation light is to have its own branch circuit, and each branch circuit is to be fitted with a protective device. Duplicate Lamp Each navigation light is to be fitted with duplicate lamps. Control and Indication Panel A control and indication panel for the navigation lights is to be provided on the navigation bridge. The panel is to be fitted with the following functions: A means to disconnect each navigation light. An indicator for each navigation light. Automatic visual and audible warning in the event of failure of a navigation light. If a visual signal device is connected in series with the navigation light, the failure of this device is not to cause the extinction of the navigation light. The audible device is to be connected to a separate power supply so that the audible alarm may still be activated in the event of power or circuit failure to the navigation lights.
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