Which statement about maintaining a proper look-out is correct?

• A. Lookout is required only in restricted visibility.
• B. Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances.
• C. Lookout is only necessary when close to other ships.
• D. Lookout is the responsibility of the navigator and not the crew.

Answer: (B)

Maintaining a proper look-out is a continuous, shared duty of the vessel. It means staying alert by sight and hearing and using all available means—such as radar, AIS, radios, and other equipment—appropriate to the current conditions. This ensures hazards, such as other vessels, obstructions, or navigation dangers, are detected in time to take action.

That description reflects the correct rule because a look-out is required at all times, not only in poor visibility or when near other ships, and it isn’t the sole responsibility of the navigator—the whole crew contributes to keeping watch.