The complete failure of the electrical plant aboard a modern ship is
an event of rare occurrence. If, however, such a contingency should
occur, provision has been made for it in the Gyro-Compass equipment
by supplying a storage battery of sufficient capacity to operate the
entire equipment for a period of two hours. The battery is so connected
electrically as to keep itself in a charged condition while the compass
is operating under normal conditions.
[Illustration: A Super-dreadnought, the bulwark of sea power.]
[Illustration: FIG. 19, FIG. 20, FIG. 21, FIG. 22, FIG. 23.