Since this is a Green Lighted Buoy sighted while approaching a harbour,this is a Lateral port hand side mark, IALA region B. To keep this buoy on your port side while travelling upstream.
You are traveling upstream on a river at dusk. You see a buoy with the number 4 and a flashing red light. What should you do?
keep the buoy on the starboard side
When you see a buoy with the number 4 and a flashing red light while traveling upstream at dusk, you should treat it as a navigational warning. The red light typically indicates a hazard or an area to avoid. It's important to reduce your speed and proceed with caution, keeping a safe distance from the buoy. Additionally, consult your navigation charts or local regulations to understand the specific implications of that buoy's signal.
You are boating near shore at twilight. You see a square-shaped daymark. You cannot make out the marker's color. What color is it?
When traveling upstream and encountering a buoy with a flashing red light and the number four, you should recognize that this indicates a hazard or a danger area, typically marking the edge of a channel or an obstruction. It's important to maintain a safe distance from the buoy and reduce your speed to navigate cautiously. Ensure to stay vigilant for any other navigational aids or hazards in the area as visibility decreases at dusk. If uncertain, consider turning back or seeking a safe place to anchor until visibility improves.
If you are traveling upstream on a river and see a red triangular daymark, you should pass this marker on the left side.
You are boating near shore at twilight. You see a square-shaped daymark. You cannot make out the marker's color. What color is it?
When you see a buoy marked with the number 4 and a flashing red light, it indicates that you are approaching a hazard or an obstruction. You should pass the buoy on the side that is indicated as safe, typically to the right (starboard) side when traveling upstream or toward a harbor. This is in accordance with the lateral system of navigation aids. Always ensure to maintain a safe distance and be vigilant for other vessels or obstacles.
A buoy with the number 4 and a flashing light typically indicates a navigational marker, often used to signify a channel or hazard. You should maintain a safe distance from the buoy, keeping it on your starboard (right) side if you are traveling upstream or toward the port (left) side if going downstream, depending on local navigation rules. Always consult the relevant nautical charts and guidelines for the specific area to ensure safe navigation.
When traveling upstream on a river you see a red triangular daymark, so you should pass on the left side.
One prolonged blast every two minutes
When heading upstream green buoys should be on the left/port side of the boat . The opposite is true when traveling downstream.