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This paper presents the results of the trials of master compasses: Vega-M, Geus-M, Meridian, and satellite compass MRK-11 received in the course of three cruises to the North Pole of the atomic ice-breaker "Yamal" in the summer of 2003. Methods of gyrocompass accuracy evaluation and some practical recommendations useful for operation in polar waters are given.
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Andreev et al. (2005) studied this question.
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