All navies still use nautical miles for navigation as the results from angle computations come in seconds, minutes of arc, which is miles or fraction of miles. One nautical mile = 1852 meters.
Measurements on a nautical chart are also in miles, you take dividers and spread them over the latitude scale on the edge and measure--result is nautical miles or fraction.
For gunnery, the metric system was and is used.
Though I am a metric nut and find the statute mile used in the USA an obsolete anachronism, In SH3 it drove me nutz the unrealistic Kms. use.
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