When navigating with range markers, what is the primary objective?

When navigating with range markers, the primary objective is to keep the markers or lights in a vertical line. This specific alignment is crucial because it indicates that the vessel is on the correct track or course. When two range markers are properly aligned, it signifies that the navigator is headed straight down the center of a navigable channel or safe passage. This helps prevent grounding or encountering hazards that could arise if the vessel drifts off course.

This alignment provides a clear visual cue, ensuring that the navigator can confidently steer the vessel without excessive reliance on charts or GPS systems. Maintaining the vertical line of the markers is fundamental for safe navigation, as it directly relates to the positioning of the vessel within the navigable waters.