What would be considered a risky action in congested boating areas?

Suddenly changing speeds in congested boating areas is considered a risky action because it can create confusion and unpredictability for other boaters. In environments where there are many vessels, maintaining consistent speed helps ensure that actions can be anticipated, which is crucial for safety. Abrupt speed changes might lead to collisions, as other boaters may not expect these sudden maneuvers and may not be able to react in time to avoid an accident.

On the other hand, staying within marked channels, keeping a steady course, and using proper signaling are all practices that enhance safety and reduce the likelihood of accidents in busy waters. Marked channels are designated to guide boats safely, a steady course indicates predictability to nearby vessels, and proper signaling communicates intentions clearly, helping to facilitate safer navigation in tight spaces.