Decca Variable errors

From International Dictionary of Marine Aids to Navigation
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4-4-165

Variable errors (in Decca)

Errors which, being random, cannot be corrected, such as errors due to night effect, variations of earth conductivity etc.




Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM