What must a vessel do if it is operating at more than idle speed?

When a vessel is operating at more than idle speed, ensuring the safety of individuals in the water becomes a priority. The correct action is to keep a safe distance from a person in the water. This is crucial because boats traveling at higher speeds can generate significant wakes and waves, which can pose hazards to swimmers and other people engaged in water activities. Furthermore, a vessel that does not maintain a safe distance could risk serious accidents or injuries.

While maintaining a safe distance from the shore might be necessary in certain contexts, it is the safety of those in the water that takes precedence when the vessel is moving faster than idle speed. Increasing speed or turning off the engine can lead to dangerous situations rather than enhancing safety. Thus, keeping a secure distance from individuals in the water is a fundamental rule to prevent accidents and protect lives.