Question 48 RVR03 - Mate of LT 500-1600 GRT

The Correct Answer is D. **Why option D ("at all times") is correct:** The requirement for maintaining a proper look-out is fundamental to maritime safety and is mandated by the International Regulations for Preventing Collisions at Sea (COLREGs), Rule 5. Rule 5 states: "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 and conditions so as to make a full appraisal of the situation and of the risk of collision." The phrase "at all times" is explicit and absolute, applying universally, regardless of weather, time of day, visibility, or location (both international and inland waters). **Why each of the other options is incorrect:** * **A) only at night:** This is incorrect because maintaining a look-out is equally critical during daylight hours to detect potential hazards, assess risk of collision, and monitor traffic. * **B) at night and during restricted visibility:** This is incorrect because while these conditions significantly heighten the need for vigilance, the look-out requirement does not cease when conditions are clear during the day. * **C) only during restricted visibility:** This is incorrect. Though restricted visibility (fog, heavy rain, etc.) demands heightened attention, the look-out must still be maintained during clear conditions to ensure awareness of all surrounding traffic and hazards.