The rule regarding lookouts applies in which conditions?

• A. Restricted visibility only
• B. Restricted visibility, dusk and dawn, and heavy traffic
• C. Only during daylight
• D. Only in harbor approaches

Answer: (B)

A proper look-out must be kept at all times, by sight and hearing and by all available means appropriate to the circumstances. This means you stay watchful in every situation, not just in bad weather or at night. The conditions listed—restricted visibility, dusk and dawn, and heavy traffic—are all times when the risk of encountering other vessels is higher and the need for a vigilant look-out is especially critical. So, the option that specifies these challenging conditions aligns with the requirement to maintain a proper look-out, emphasizing vigilance when hazards are more likely to be present. In daylight or calm conditions you still maintain a look-out, but those particular scenarios illustrate the typical contexts where a lookout becomes essential.