TM 5-1940-322-24
0003 00
THEORY OF OPERATION (Contd)
FUNCTION OF THE ELECTRICAL SYSTEM
The boat electrical system is 24 VDC. Two 12-volt batteries are connected in series. There are two sets of
batteries for power. Each engine has an alternator for charging the batteries. The circuits are arranged so
that either alternator charges both sets of batteries automatically. Power is drawn from the batteries by two
separate circuits. The batteries on the port side power the starter motor of both engines and the port engine
instruments. The batteries on the starboard side power the starboard engine instruments and the auxiliary
circuits. If the emergency link pushbutton located on the auxiliary switch panel is depressed, both battery
banks are connected in parallel.
MASTER
SWITCH
END OF WORK PACKAGE
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