A number 4 buoy typically indicates a lateral marker used in maritime navigation, signifying the left side of a channel when entering from the sea. It is part of the IALA (International Association of Lighthouse Authorities) buoyage system, specifically following the "IALA A" system, which is used in most parts of the world. The buoy is usually colored red or has a red band and may also feature a specific shape, such as a can or cylinder, to help mariners identify it easily.
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?
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Keep the buoy on your starboard (right) side.
Keep the buoy on your starboard side as you enter the harbor.
When passing a buoy marked with the number 4 and a flashing red light, you should keep the buoy on your port (left) side. This indicates that you are in a channel where the right side is marked with green buoys. Always maintain a safe distance from the buoy and be aware of any potential hazards in the water.
Have the bout on your right
keep the buoy on the starboard side
go around it on either side
no
A red flashing buoy with the number 4 typically indicates a navigational aid marking a specific point in a waterway. It is often used to signal the location of hazards or to guide vessels through channels. The number 4 signifies its position in a series of buoys, helping mariners identify their location and navigate safely. These buoys are part of a standardized system that helps ensure safe maritime navigation.
A number 4 buoy typically indicates a lateral marker in maritime navigation, specifically part of the IALA (International Association of Lighthouse Authorities) buoyage system. In the U.S. and other countries using the IALA A system, a number 4 buoy is usually colored green and may have a conical shape, signaling that it marks the left side of a channel when entering from the sea. It can also be used to indicate safe passage or the presence of hazards nearby. Always refer to local navigation charts for specific meanings and regulations.
When passing a buoy marked with the number 4 and a flashing red light, you should keep the buoy on your starboard (right) side. This indicates that you are navigating in a channel where the buoy marks the edge of navigable waters. Ensure to maintain a safe distance and be aware of any local navigation rules or conditions that may apply. Always proceed cautiously to avoid hazards in the water.