What should the lookout report to the Officer of the Watch?

The lookout's primary responsibility is to provide continuous observations and report any relevant information that could affect the navigation of the vessel. This includes not only the position of other vessels but also any lights, large floating objects, and other navigational hazards that may be present in the vicinity. Reporting these elements is crucial for the safe operation of the vessel, as they directly inform the Officer of the Watch about potential risks and the overall situation around the ship.

By communicating details about lights, vessels, or large floating objects, the lookout ensures that the Officer of the Watch has a comprehensive understanding of the navigational environment, allowing for informed decision-making. This goes beyond simply noting the position of other vessels or particular weather conditions, encompassing a broader spectrum of situational awareness necessary for maritime safety. Sound signals and specific weather conditions are indeed important, but they form only a part of the lookout's competencies, whereas the collective reporting of various observable factors manifests a holistic approach to navigation safety.