The question is how many other animals might use similar night-time navigation.

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The crew were flying their twin-engined aircraft on a night-time cross country navigation exercise out of RAF Kinloss in Moray on 13 April.

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Turn-by-turn navigation doesn't provide a night mode, customizable map layers or manually specified rerouting.

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But what shocked locals is that this happened on a calm January night, to a modern cruise liner bristling with the latest navigation equipment.

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