9  REPRESENTATION ON CHARTS

9.1  The legends, symbols and notes appearing in paragraphs 9.2, 9.3, 9.4 and 9.5 are recommended by the International Hydrographic Organization as guidance for the representation of details of routeing systems and associated measures on nautical charts. They are included to illustrate the information likely to be found on charts and as an aid to those designing proposed routeing systems for adoption by IMO.

9.2  Use of legends on charts and in notes

Legend	Use of legend
Traffic separation scheme	Not usually shown on charts. Referred to in notes as "traffic separation scheme" its national language equivalent.
Inshore traffic zone	"Inshore traffic zone" its national language equivalent is shown on charts and is referred to in notes.
Precautionary area	"Precautionary area" its national language equivalent may be shown on charts in lieu of the symbol and is referred to in notes.
Deep-water route	"DW" is shown on charts to indicate the deep water, "DW" or "deep-water route" is referred to in notes.
Area to be avoided	"Area to be avoided" or its national language equivalent is shown on charts and is referred to in notes.
Two-way route	"Two-way route" is not usually shown on charts but is referred to in notes.
Recommended route	"Recommended route" is not usually shown on charts but is referred to in notes.
Recommended track	"Recommended track" is not usually shown on charts but is referred to in notes.

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