Simrad GC80/GC85 Expanded Gyro Compass
2 20221529 / C
1.1 Introduction
GC80 and GC85 Expanded Gyro compasses have been
designated for any size of vessels to enhance the navigation
capabilities and reliability. The gyro compasses eliminate the
inconvenience and limitations of magnetic compasses, and
provide a variety of electrical outputs to supply accurate and
consistent heading information to other navigational equipment.
- A GC80 Expanded gyro is designed for vessels with speed
up to 30 knots. The system complies with IMO A.424 (11)
and Wheel Mark Specifications.
- A GC85 Expanded gyro system is suitable for high speed
vessels with speed up to 70 knots. It complies with IMO
A.821 (19) HSC.
GC80 and GC85 Expanded gyro systems have different
sensitive elements, but use the same GC80 Expanded Control
unit. The systems are identified with divergent dip switch
settings in Master compass and in the Control unit.
Note! A GC80 or GC85 system is identified by the labelling on top of
the Master compass’ case as shown on the figure below.
The labelling on the control unit is identical for both gyro
systems.
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