Which of these actions is required when operating a vessel in congested waters?

When operating a vessel in congested waters, staying at a safe distance is crucial for ensuring safety and avoiding collisions. In crowded areas, vessels are likely to be maneuvering closely to one another, and maintaining a safe distance allows for better reaction times and the ability to adjust if another vessel suddenly changes course or speed. This distance helps in preventing accidents and ensures that boats can navigate safely without interfering with each other's paths.

While maintaining a steady speed may seem logical, it can sometimes be appropriate to change speed based on the situation or the actions of nearby vessels. Yielding to larger vessels isn't an absolute rule since all vessels should follow navigational rules that dictate right-of-way, which can depend on the specific circumstances. Anchoring in place is generally not advisable in congested waters, as it can create hazards and impede the movement of other vessels.