PT 7, Ch 9, Section 4.4. states that local distribution panels are to be provided for all items of electrically operated navigational equipment, the telephone system, the watch safety system, and the clear view systems. These panels are to be supplied by two exclusive circuits, one fed from the main source of electrical power and one fed from an emergency source of electrical power. Each item of equipment is to be individually connected to its distribution panel. The power supplies to the distribution panels are to be arranged with automatic changeover facilities between the two sources. As can be seen in figure 28, the bridge equipment is connected to both main (MS) and emergency (EM) switchboards. Automatic changeover is facilitated in the event of a blackout.


Electrical drawing, M/S MERSol.

Last modified: Monday, 20 March 2023, 2:51 PM