What is a safe speed for boating during darkness or poor visibility?

The concept of safe speed while boating, particularly during darkness or in poor visibility, revolves around the need to avoid collisions and ensure the vessel can be stopped safely if necessary. A slow speed allows the operator sufficient time to see hazards or other vessels and react accordingly. The ability to stop safely is crucial, as visibility is limited; therefore, speed must be adjusted to allow enough reaction time to prevent accidents. This principle applies universally in navigation and is especially vital when conditions impair visibility, making it harder to judge distances, sizes, and the movements of other objects on the water.

In contrast, operating at fast speeds might hinder the ability to see and react in time, while a moderate speed might not necessarily provide the same assurance of stopping distance, depending on the specific conditions encountered. Boating at any speed, regardless of visibility conditions, is not appropriate; lights alone do not compensate for the inability to maneuver effectively in reduced visibility.