What term describes the markers indicating the sides of a channel?

• A. Lateral markers
• B. Daymarks
• C. Non-lateral markers
• D. Regulatory markers

Answer: (A)

Lateral markers define the edges of the navigable channel. They show where the safe water lies and which side you should keep to as you go along, using distinct red and green colors to indicate the left and right boundaries. At night you follow their lights; in daylight you rely on the daymark appearance to identify the same boundary. Other marker types exist for different purposes—daymarks are markers usable in daylight without relying on lights, non-lateral markers indicate hazards or special navigation information, and regulatory markers convey rules rather than channel edges. So, the markers that indicate the sides of a channel are lateral markers.