The lookout requirement applies in which waters?

• A. Inland waters only
• B. International waters only
• C. Both International and Inland waters
• D. Coastal waters only

Answer: (A)

Maintaining a proper lookout is required at all times for every vessel. The lookout must be kept by sight and hearing and by all available means appropriate to the circumstances, so you can fully assess the situation and the risk of collision. This obligation applies wherever vessels navigate—international waters as well as inland waters (lakes, rivers, bays connected to the sea, and other inland navigable waters).

So the requirement isn’t limited to inland waters alone; it encompasses both inland and international waters. Saying it applies only to inland waters leaves out a large span of where this rule is active, including coastal and international routes.