Canadian Chart 1 Symbols, Abbreviations and Terms

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Rocks, Wrecks, Obstructions - Section K

Rocks

Ref.	IHO Symbology	Description	CHS Symbology
10		Rock (islet) which does not cover, height above the plane of reference for elevations
11		Rock which covers and uncovers, with height known or unknown above chart datum
12		Rock awash at chart datum
13		Underwater rock of unknown depth, dangerous to surface navigation
14		Underwater rock of known depth
14.1		- inside the corresponding depth area
14.2		- outside the corresponding depth area, dangerous to surface navigation
15		Underwater rock of known depth, not dangerous to surface navigation
16		Submerged coral reef
17		Breakers