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A comment on Giant Ship Is Moved To and Fro to Break Suction: Suez Update. Parent comment

Re:Giant Ship Is Moved To and Fro to Break Suction: Suez Update by roelschroeven on Monday March 29, 2021 @06:12AM (#26619578)
Those things exist, and they work pretty good. I don't know if they have a single receiver or a separate receiver for each antenna. Examples:

http://www.jrc.co.jp/eng/product/lineup/jlr21_31/pdf/JLR-21....

https://comnav.com/wp-content/uploads/2018/10/WEB_GNSS-G2G2B...

A traditional gyrocompass is the more common option though, I think.

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