Chart 1 : Symbols, Abbreviations and Terms

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Positions, Distances, Directions, Compass - Section B

SNS b

Control Points

Ref. IHO Symbology Description CHS Symbology
20 Triangulation point
21 Observation spot
22 Fixed point
23 Benchmark
24
25.1 Distance along waterway, no visible marker
25.2 Distance along waterway with visible marker
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