Kongsberg MGC® R4 COMPASS System

The MGC R4 COMPASS system is IMO type approved as a

gyro compass for navigation purposes for use together 

with a heading and bearing repeater. Very high reliability

is achieved by using Ring Laser Gyros with no rotational

or mechanical wear-out parts.

Typical applications

The system can be operated as an inertial navigation

system as well as a gyro compass with output of position

and heading. Linear position and velocity measurements

can then be output in up to four different points on the

vessel.

Function

The MGC is a strap-down based gyro compass

including three Ring Laser Gyros (RLG) and three linear

accelerometers. The system can operate in Attitude and

Heading Reference System (AHRS) mode and Inertial

Navigation mode. In the AHRS mode input of speed

and latitude data (VBW/VTG and GGA/GLL) is required.

External time input is also required (ZDA). In this mode

the system will output heading, roll, pitch and heave. In

the Inertial Navigation mode input of latitude, longitude,

height and time (GGA and ZDA) and PPS from a GNSS

receiver is required. In this mode the product will output

heading, roll, pitch, heave and position.

The system is delivered with configuration software.

In this software the user selects output formats on the

different communication lines in addition to other

configuration purposes.

Digital I/O protocols

MGC data is available through both Ethernet interface and

serial lines enabling easy distribution of data to multiple

users on board the vessel. Output protocols for commonly

used equipment are available on five individually

configurable serial lines and five Ethernet/UDP ports.

FEATURES

• 0.008° roll and pitch accuracy

• 0.02° heading accuracy GNSS aided

• No rotational or mechanical wear-out parts

• Outputs on RS-422 and Ethernet

• High output data rate (200 Hz).

• Small size, light weight and low power consumption

• IMO type approved

• Each MGC delivered with Calibration Certificate

• Selectable communication protocols in the configuration

software