Lateral Buoys

Lateral buoys and day beacons mark the side on which they may be safely passed. This determination of safe passage can only be made by first assessing whether one is proceeding in an upstream or downstream direction. A helpful mnemonic is to consider that, when one is leaving harbour or land progressing out to sea, they are going downstream. Conversely, when one is progressing from seaward towards land or harbour, they are proceeding in an upstream direction.