Yokogawa CMZ900D Gyrocompass

Yokogawa CMZ900D Gyrocompass

Yokogawa CMZ900D Gyrocompass

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Product Features

Yokogawa CMZ900D Gyrocompass

Features a highly reliable dual system configuration.


  • The system configuration can easily be adapted to each vessel's specifications.
  • IEC 61162-2 high-speed code is available for the heading and rate of turn (ROT) outputs.
  • A unique anti-vibration system enhanced by the velocity damping effect of high viscous oil, provides superior damping of vibration and decoupling of shock at sea.
  • A small and lightweight container enhances the follow up speed. The gyrocompass changes smoothly and does not lag when a small vessel rapidly changes course.
  • A space-saving design: the master compass and the control box can be installed on the autopilot stand.
  • Automatic speed error correction is possible if both the ship's speed signal from the speed log and the latitude signal from a GPS or some other positioning device is available. Further, the latitude can be estimated from the ship's speed and the gyrocompass reading if the positioning device signal is absent.
  • An external heading signal from an instrument such as a magnetic compass or a GPS compass can be passed to repeater compasses and other ship equipment for back-up purposes.
  • Mechanical switchover as well as switchover by software control, is available to select which master compass can be used for the purpose of reliability on the switch action.
  • As a standard function, a built-in monitor detects deviations between the master compass and external sensor heading readings.
  • The restart time can be preset from 1 to 99 hours.


Settling Time
and Accuracy

Settling time

Within 5 hours
(Operational state is reached in about 2 hours)


Static: ±0.25 deg.x sec (Latitude)
Dynamic: ±0.75 deg.x sec (Latitude)

Follow up accuracy

0.1 deg. or less

Max. follow up speed

30 deg./s

(Normal use)

Permissible angle

±40 deg.(Roll), ±40 deg. (Pitch)

Ambient temperature

-10 deg.C to +55 deg.C

Power Supply


100V/110V/115V/220V AC 50/60Hz single-phase
24V DC (For back up power)


24 V DC

Signal Inputs

speed error correction

Latitude: IEC61162-1 (NMEA0183)

1 circuit

Ship's speed: 200 P/nm or IEC61162-1

1 circuit


IEC61162-1 (NMEA0183)

1 circuit

Signal Outputs

Heading data for repeater compasses

8 circuits

Heading data for steppers

4 circuits

Serial data


1 circuit

IEC61162-1/-2 selective

2 circuits

Analog heading data

Heading signal

1 circuit

Quadrant signal

1 circuit

Turn rate signal

3 circuits

Gyro. running (Close contact when running)

1 circuit ea.

Alarms (Open contact
when abnormal)

System failure

1 circuit

Master compass failure

1 circuit ea.

No voltage

1 circuit ea.

Heading deviation signal (Close contact when excessive)

1 circuit