Repeaters are designed to receive the signal transmitted from the master
gyro. This allows the ships control stations to receive real-time gyro
data. The chief advantage of repeaters is that they may be set up nearly
vertical for use by the helmsman. Repeaters may also be placed flat for
taking bearings of navaids or ships with alidades and bearing circles.
Figure 2-12 illustrates a
standard repeater. The
card is laid out with
relative bearings on the
outside circle and true
bearings on the inside
circle. In upcoming topics
you will learn how to use
related tools to measure
angles (bearings) using
Figure 2-12. Standard gyro repeater.
Repeaters are normally found at all the ships control stations, these
areas include but are not limited to the following spaces:
The pilothouse and bridgewings
Additional repeaters are normally placed in the following spaces:
Commanding officers stateroom
The QMOW must check the repeaters occasionally against the master
gyro to determine errors.