Nautical measured mile
A nautical measured mile is a method to provide an accurate measure of a nautical mile (nmi) for ships at sea. It consists of two pairs of towers, or other fixed marks, on shore precisely one nautical mile apart.
A nautical measured mile is a method to provide an accurate measure of a nautical mile (nmi) for ships at sea. It consists of two pairs of towers, or other fixed marks, on shore precisely one nautical mile apart.
A nautical measured mile is a method to provide an accurate measure of a nautical mile (nmi) for ships at sea. It consists of two pairs of towers, or other fixed marks, on shore precisely one nautical mile apart.
Source: Wikipedia "Nautical measured mile" · CC BY-SA 4.0
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