A buoy with both red and green bands typically indicates a safe water marker, signaling that it is safe to navigate between the two colors. In maritime navigation, this type of buoy often marks a fairway or a channel that is free from hazards. The red and green colors help boaters determine the correct course to follow, ensuring safe passage.
Preferred channel markers are buoys showing red and green bands.
A white buoy with orange bands and an orange diamond is a hazard buoy. Watch out for shoals, rocks, fallen trees, construction, or other hazards.
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In Region B a "green can shaped buoy" stands for the edge of a channel on a boaters left side when entering from open sea or heading upstream, the opposite applies in Region A.
A boat should cruise between a green and red buoy. The red buoy will always be located on the right side of your boat. Red buoys will always mean , returning, red, and right. There will be a number on a red buoy that will give the chart location. The numbers will always be even.
If it's "red right returning", it's green left returning and green right (starboard) going. That is to say, you pass it to the left (port) as you return to port.
In Region B a "green can shaped buoy" stands for the edge of a channel on a boaters left side when entering from open sea or heading upstream, the opposite applies in Region A.
A green square daymark buoy indicates a safe navigational point that is typically part of a system used to mark channels and hazards in waterways. It signifies that the buoy is a lateral marker, specifically indicating the starboard side of a channel when approaching from the sea. In the United States, it follows the "green right returning" rule, meaning boaters should keep the green buoy on their right when returning from the open water.
Do not pass between the buoy and the shore
These are called preferred channel markers. Which means you can pass on either side, however whatever color the topmost color is is the preferred passing side. Topmost Green prefer to pass on Starboard (right) Topmost Red prefer to past on Port (left). There are sometimes lit, sometimes lettered, never numbered.
Danger.
A yellow buoy in the water means caution. They can mean there is danger of pipes, dredge lines or other dangers.