Chart 1 : Symbols, Abbreviations and Terms

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Fog Signals - Section R

Examples of Fog Signals

Ref. IHO Symbology Description CHS Symbology
20 Siren at a lighthouse, giving a long blast followed by a short one (N), repeated every 60 seconds
21 Wave-actuated bell buoy
22 Light buoy with horn giving a single blast every 15 seconds in conjunction with a waveactuated whistle
The fog signal symbol may be omitted when a description is given.
Note: For information concerning fog signals, see the Canadian Coast Guard publication, "List of Lights, Buoys and Fog Signals". https://www.notmar.gc.ca/list-livre-en.php
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