A port hand day beacon is similar to a port hand lateral buoy.
It points out the left side of a preferred channel.
It must be kept on the left when the craft is going upstream.
It is a black or green square centered on a white background with a green reflective boarder.
It has no lights and is visible only during daylight.
A starboard hand day beacon is similar to a starboard hand lateral buoy.
It points out the right side of a preferred channel.
It must be on the right when the craft is going upstream.
It is a red triangle colored with a white contoured line.
