Definition
NP 100 explains how Admiralty charts and publications are produced and maintained, how to interpret survey quality and datums, and how to correct a folio. Further chapters cover ice and its navigation, meteorology and oceanography, the operation of aids to navigation, environmental protection obligations and general good practice. It is the standard background text underpinning the rest of the Admiralty series and is well worth reading before relying on any of the specialist volumes.
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