A History of the Ship's Compass Naval History Magazine - December 2022, Volume 36, Number 6

Mechanical gyroscopes are beginning to be replaced by ring-laser or hemispherical-resonator ones, but most ships retain a traditional magnetic compass as a backup—just in case. 

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Naval History Magazine - December 2022, Volume 36, Number 6

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Naval History Magazine Vol 36 # 5 October 2022 See Content Page

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