German navigation system manufacturer Raytheon Anschütz says it has supplied an advanced gyro compass system for two 25,000 dwt polar class heavy transport vessels for operation north of 70° LAT.
The vessels AUDAX and PUGNAX were ordered for Red Box Energy Services and built at Guangzhou Shipyard International (GSI) in China in accordance with the DNV NAUT-AW and highest ice class notations.
Raytheon Anschütz has supplied these high-tech vessels with
a comprehensive and advanced dual gyro compass system complete with redundancy in distribution and well as a steering gear control system. This includes the NP 5500 fully adaptive autopilot for maximum precision in heading and track control steering. The Anschütz instrumentation enables year round operation in polar conditions, including temperatures below -40° C.
The gyro system integrates two maintenance-free, strap-down gyro compasses, which use hemispherical resonator gyros (HRG) for measuring angular rates. The new technology offers superior lifetime performance and outruns the long-term stability of traditional fiber-optical gyros (FOGs).
Anschütz said its gyro compasses offer accuracy and reliability even under harshest environmental conditions. The sensors will deliver high precision and operational safety to support the demanding mission profile of the new arctic vessels, which have been deployed for module transportation for the Yamal LNG project in Russia
. The system includes typical features of Anschütz gyro systems, such as the automatic speed- and latitude error correction, an individual speed error correction mode, an independent transmitting magnetic compass path and quick settling.