3.3 navigation Buoys

Bifurcation Buoys

Bifurcation buoys space lateral mechanism buoys that suggest the junction of channels. They have three alternate stripes the red and also green and the optimal stripe shows the location of the preferred, or main, channel.

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In the diagram on page 22, the bifurcation buoy has a red top. Making use of the rule, Red right Returning, that way if you wish to monitor the preferred channel in this case, the bifurcation buoy need to pass friend on the right.

Fairway Buoys

Fairway buoys have actually one vertical red stripe and also one upright white stripe. The red strip is ~ above the side of the channel where you would uncover the red buoys.

Day Beacons


Day Beacons usage the same colours as the Lateral System, yet in one instance may substitute black for green. They have the right to be channel and danger markers or bifurcation markers, however are usually channel, or peril markers.

They space not lighted and are for day-time usage only.

A harbor hand day beacon, which has a black color or green square, centred ~ above a white background v a green reflective border, point out the harbor hand next of the channel or a danger and must be kept on the harbor side when proceeding upstream. If numbered, the number will be odd and of a reflective material.


A starboard hand work beacon, which has a red triangle centred ~ above a white background through a red reflective border, marks the starboard hand next of the channel or a danger and also must be preserved on the starboard side as soon as proceeding upstream.


Ranges consists of two markers, upside under to each various other with one fine in former of the other. The front marker is reduced than the behind marker.

They carry out a recommended track because that navigators as soon as both marks room in line. The operator will see one marker on height of the other.

Special function Buoys

There are a variety of special objective buoys that mark everything from anchorages to swimming areas to no-wake zones and danger areas.

Pleasure craft operators must discover to determine these buoys and know what castle mean.

They space depicted and also explained in the diagrams the follow.

Keep out Buoys


Keep out Buoys mark an area wherein boating is prohibited. They are white v two horizontal orange bands and an orange cross inside an orange diamond on two opposite sides. If they carry a light, the light is a yellow flashing(Fl) 4 seconds, light.


Control Buoys note an area whereby boating is restricted. They may show such points as speed limits. They space white through two horizontal orange bands and an orange circle on 2 opposite sides. Inside the orange circles will certainly be a black figure or price indicating the restriction. If they bring a light, the light is a yellow flashing (Fl) 4 seconds, light.

Hazard Buoys mark random risks such together rocks and also shoals. They room white through two horizontal orange bands and also an orange diamond on 2 opposite sides. If they bring a light, the irradiate is a yellow flashing (Fl) 4 seconds, light.

Information Buoys save information, by native or symbols, of attention to mariners, such as directions to marinas. They space white with two horizontal orang bands and also an orange square on two opposite sides. If they bring a light, the irradiate is a yellow flashing (Fl) 4 seconds, light.

Swimming Buoys mark th perimeter the a swim area. They room white. If they lug a light, the irradiate is a yellow flashing (Fl) four seconds, light.

Posted Command indicators may be encountered indigenous time come time. Lock will include warnings such as No wake Zones, No Anchorage Signs, speed Limit Signs, low Head Dam Signs, strength Line Hazards and Pipe line Hazards.

Cautionary Buoys are used to warn mariners of risks such as firing ranges, race courses, seaplane bases, traffic separations, underwater structures and also areas where no safe v channel exists. Yellow in colour they lug an identification mark, or letter. If they have actually a topmark, it is a single yellow "X" shape. If lighted, the irradiate a yellow flashing (Fl) 4 seconds light.

The international Code Flag A (Alpha) is a Blue and also White flag shown from the watercraft or dock native which diving task is acquisition place.

The exact location of the diver is marked with a white buoy transferring a red flag that not less than 50 cm square with a white diagonal stripe expanding from the tip of the hoist to the bottom of the fly. If that is lighted, it has a yellow flashing (Fl) (four seconds), light.

All ship operators have to stay clear and pass slowly.

Pleasure craft operators should take early and also substantial action to avoid locations where this buoys room displayed.


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