Canadian Chart 1 Symbols, Abbreviations and Terms

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Offshore Installations - Section L

Submarine Pipelines

Ref.	IHO Symbology	Description	CHS Symbology
40.1		Supply pipeline: unspecified, oil, gas, chemicals, water, bubbler system (prevents ice from forming)
40.2		Supply pipeline area: unspecified, oil, gas, chemicals, water
41.1		Outfall and intake: unspecified, water, sewer, outfall, intake
41.2		Outfall and intake area: unspecified, water, sewer, outfall, intake
42.1		Buried pipeline (with nominal depth to which buried)
42.2		Pipeline tunnel
43		Diffuser, crib (depth known)
44		Disused, abandoned pipeline/pipe