Raytheon Anschütz has introduced new features for its Standard 22 gyro compass. Among the new features, the most important improvements are independent transmitting magnetic compass and individual speed error correction functions.
Standard 22 will now be equipped with a modified distribution unit, which is enhanced by an independent transmitting magnetic compass (TMC) path. Thus, a failure in the distribution unit or even in the compass system will not affect the processing of the magnetic compass heading.
This enhancement ensures that the steering repeater would be switched automatically to magnetic heading in a situation of lost gyro compass heading. With this function, various flag state authorities do not require an optical bypass for the magnetic compass on board of the vessel.
According to Olav Denker, the independent transmitting magnetic compass function of Standard 22 will not only increase standards of safety, but will also offer economical benefits: "Thanks to the new feature, no separate TMC unit will be required and the yard does not have to install an optical bypass for the magnetic compass. This saves costs for the ship owner and installation time for the yard."
In addition to manual and automatic speed error correction modes, the new Standard 22 will also offer an individual speed error correction mode. In a double or triple gyro compass systems it will be possible to input speed and latitude information directly into the Standard 22.
This means that speed and latitude from more than one speed log / GPS receiver are used for speed error correction at the same time. The benefit is that in case of a speed or latitude error the speed error correction of only one Standard 22 is affected. Subsequent systems such as Dynamic Positioning Systems are able to detect a heading error caused by incorrect speed and position data. Therefore, the additional construction of speed and position data processing is a major contribution to increased failure safety and detection.
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