Top marks

Top marks can be usually attached to all authorized beacons. Cylindrical (green) marks for port beacons, conical (red) marks for starboard beacons and X-shaped (yellow) marks for special-purpose beacons are most often used. However, depending on the purpose of beacons and the locations where they are installed, some of the beacons are used with other top marks as well, such as directional marks, isolated danger marks and safe water marks. When making a plan to install beacons, please consult us about whether or not to attach top marks and, if they are needed, the size and shape of the top marks.