(excerpt from Regulations about way of marking of waterways and aids to navigation)
The forbidden anchorage mark is a black inverted anchor drawn on a white background.
In channels, straits and rivers, a mark shall be placed on both sides of channels, straits and rivers.
NAUTICAL CHARACTERISTICS OF FORBIDDEN ANCHORAGE MARK
|Forbidden anchorage mark
|Shape and clolour of mark
||Black inverted anchor on white background