What is the general guideline for maintaining distance behind another vessel when following at speed?

• A. Stay within one boat length
• B. Follow as closely as possible
• C. Only use visual signals to communicate distance
• D. Maintain a safe, prudent following distance appropriate for speed, water conditions, and visibility

Answer: (D)

Keeping a safe, prudent following distance is about giving yourself enough time and space to react and stop if the vessel ahead slows or a hazard appears. The amount of space you need isn’t fixed; it depends on how fast you’re moving, how rough the water is, and how well you can see. At higher speeds, or in choppy water and limited visibility, you need a larger gap to safely maneuver, slow down, or stop. Conversely, in calm conditions with low speed you can be closer, but still maintain a sensible distance. Relying on fixed distances or only visual signals doesn’t account for changing conditions and can lead to collisions, so the best practice is to adjust your following distance to the speed, water conditions, and visibility.