The special marks can be of 2 types :
- enduring
- casual
| Colour | yellow |
| Indicator | (if it exists) yellow'X' shape |
| Fire | (if it exists) yellow at any rate |
Special durable brands
They are used to permanently mark areas mentioned in sailing instructions:
- sewer ports
- channelling
- material deposit
- exercise area
- wire ropes
- pipelines
- ...
They are distinguished by their yellow colour and their X-shaped light
Occasional special brands
They are used to mark areas:
- beaconing to protect swimmers
- marking of the 300 m band
- regatta courses or other water sports
- ...
For greater clarity, they may include pictograms (anchorage prohibited, engine prohibited...).
They are yellow in colour, but have no indicators.
