What speed should you maintain when passing under a bridge?

Maintaining headway speed when passing under a bridge is recommended to ensure safety and maneuverability. Headway speed is defined as the minimum speed that allows a vessel to maintain steerage control, which is crucial in confined areas such as waterways beneath bridges. This speed enables the operator to respond to any unexpected obstacles or changes in current, while still allowing for safe navigation through the bridge opening.

Passing under a bridge requires careful attention to factors such as height clearance, water flow, and the potential presence of other watercraft. By adhering to headway speed, boater stability and control are maximized, reducing the risk of collisions or becoming stuck.

In contrast, options such as full speed or idle speed do not provide the necessary control and responsiveness required in tighter navigation spaces. Additionally, slowing down significantly may hinder your ability to maintain steerage and could lead to difficulties in navigating through the bridge safely.