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Used for a well defined channel. |
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Used in conjunction with conventional direction of buoys. |
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Indicate port and starboard sides of the route to be followed. |
If you are following the conventional direction, you will have green buoys to starboard and red buoys to port.
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| Port hand mark | Starboard hand mark |
Port hand: Can, pillar or spar.
Starboard hand: Conical, pillar or spar.
Port hand: Single red can.
Starboard hand: Single green cone, point upward.
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| Port hand topmark | Starboard hand topmark |
Port hand: Red band or square.
Starboard hand: Green band or triangle.
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| Port hand retroteflector | Starboard hand retroreflector |
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Red buoys will have red lights, green buoys green lights. |
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May have any rhythm other than composite group flashing. |
If you are following the conventional direction, you will have red buoys to starboard and green buoys to port.
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| Port hand mark | Starboard hand mark |
Port hand: Can, pillar or spar.
Starboard hand: Conical, pillar or spar.
Same as region-A.
Port hand: Single green can.
Starboard hand: Single red cone, point upward.
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| Port hand topmark | Starboard hand topmark |
Port hand: Green band or square.
Starboard hand: Red band or triangle.
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| Port hand retroteflector | Starboard hand retroreflector |
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Red buoys will have red lights, green buoys green lights. |
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May have any rhythm other than composite group flashing. |
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Same as region-A. |
