That bearing is also sometimes called a danger bearing Back to List Visibility Visibility is determined by how high the light is and how bright it is. This visibility will be noted on the chart. This visibility can be limited by weather, geographic obstacles, and the curvature of the earth. List Ranges Rangers are structures built onshore. They come in pairs and are lighted.
Ranges indicate the center line of a channel.
The chart will tells the distance from the range you need to be to utilize information from the range. When the range looks like the one on the left, the vessel is out of the the channel When it looks like the one on the right, the vessel is in the channel.