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Canadian Chart 1 Symbols, Abbreviations and Terms

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Rocks, Wrecks, Obstructions - Section K

Obstructions and Aquaculture

Ref. IHO Symbology Description CHS Symbology
40 Obstruction, depth unknown
41 Obstruction, least depth known by sounding only
42 Obstruction, least depth known, swept by wire drag or diver
43.1 Stumps of posts or piles, wholly submerged
43.2 Submerged pile, stake, snag or stump (with exact position known)
44.1 Fishing stakes
44.2 Fish trap, Fish weirs, Tunny nets
45 Fish trap area, tunny nets area
46.1 Fish haven
46.2 Fish haven with minimum depth
47 Shellfish beds with no obstructions
48.1 Marine farm (on largescale charts)
48.2 Marine farm (on smallscale charts)
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