When you see a green lighted buoy with the number 3, it indicates a safe navigational mark. This buoy typically marks the right side of a channel when returning from open sea, so you should keep it on your starboard (right) side as you navigate. Ensure you maintain a safe distance from the buoy and monitor your surroundings for other vessels and navigational hazards.
I think you should----Keep the buoy on your port (left) side.
This is a channel marker, placed on the edge of a channel. Green markers will always have an odd number on them. If you are heading upstream it should be to your left. If you are heading downstream it should be to your right. It will be opposite a red marker or bouy with an even number on it. To aid in navigating, the term "red, right, returning" is used meaning as you return from open waters (head upstream), the red marker, bouy, sign etc, should be to your right. That means the green one, in your example with a 3 on it, should be to your left. If its on your right side, you are outside the cleared channel area.
When you see a green lighted buoy with the number 3, it indicates a channel marker that typically signifies a safe navigational route. You should keep the buoy on your starboard (right) side when proceeding in the direction of the channel. Always maintain awareness of your surroundings and other vessels while navigating. If unsure, consult your nautical charts for additional guidance.
left
Keeping it on your port, passing it to starboard, will prevent your running aground.
should be on the right
The green buoy should be on the left (port) side of the boat as you are entering port.
port / left side
port / left side
port / left side
Red Right Returning- so the green buoy should be on your left side, the red on your right, and you in the middle.