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GPS is only one of several methods used by the Royal Navy and the British military in general to determine location, and military personnel are trained not to rely solely on GPS. Ships, in particular, as well as vehicles, also make use of inertial navigation systems. These are not as accurate as GPS, and need to be recalibrated fairly frequently, but if ...


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The screenshot above indicates that the stealth ship is visible to the naked eye to someone on HMS Devonshire. The screenshot indicates that it's visible to the movie audience. The ship is only visible to us for storytelling purposes In this case we, as the audience, have a better view that any watchkeeper. In the dead of night seeing a black or dark grey ...


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