Isolated danger mark

bullet Marked, erected or moored on or above a danger of limited extent.
bullet Has navigable water around it.

 

Can be used for

bullet Dangers of limited extend such as a wreck, rock.

 

Color:

bullet Black with one or more broad horizontal red band.

 

Topmark:

bullet Two black spheres, one above the other.

 

Shape:

bullet Optional.
bullet Not conflicting with lateral marks.
bullet Preferably pillar or spar.

 

Lights:

bullet White light.
bullet Group flashes 2.

 

Symbols used in admiralty charts:

 

Photographs:

Isolated danger mark.

 

 

 

Updated: July 03, 2003