Chart 1 : Symbols, Abbreviations and Terms

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Positions, Distances, Directions, Compass - Section B

Supplementary national symbols

Ref. IHO Symbology Description CHS Symbology
a Approximate, About
b Astronomic station
c Inch(es)
d Yard(s)
e Statute mile(s)
f Kilocycle(s)
g Kilohertz
h Megahertz
i Microsecond(s)
j Annual change nil
k Position of feature is at end of leader line
l Position of North Magnetic Pole at the given year
n International boundary mark
o Point symbols (approximate positions)
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