3.3 navigation Buoys

Bifurcation Buoys

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

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In the diagram on web page 22, the bifurcation buoy has actually a red top. Making use of the rule, Red right Returning, that means if you great to follow the desired channel in this case, the bifurcation buoy should pass you on the right.

Fairway Buoys

Fairway buoys have actually one upright red stripe and also one upright white stripe. The red strip is ~ above the next of the channel wherein you would discover the red buoys.

Day Beacons


Day Beacons usage the same colours as the Lateral System, yet in one situation may substitute black color for green. They can be channel and danger mite or bifurcation markers, however are normally channel, or hazard markers.

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

A port hand work beacon, which has a black color or environment-friendly square, centred on a white background with a green reflective border, marks the port hand side of the channel or a danger and also must be kept on the port side once proceeding upstream. If numbered, the number will certainly be odd and of a reflective material.


A starboard hand work beacon, which has actually a red triangle centred top top a white background with a red reflective border, marks the starboard hand next of the channel or a danger and also must be preserved on the starboard side once proceeding upstream.


Ranges consists of 2 markers, upside under to each other with one fine in prior of the other. The front marker is lower than the rear marker.

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

Special objective Buoys

There space a variety of special purpose buoys the mark everything from anchorages come swimming areas to no-wake zones and also danger areas.

Pleasure craft operator must discover to recognize these buoys and also know what they mean.

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

Keep out Buoys


Keep out Buoys note an area whereby boating is prohibited. They are white v two horizontal orange bands and also an orange cross inside an orange diamond on 2 opposite sides. If they lug a light, the irradiate is a yellow flashing(Fl) four seconds, light.


Control Buoys mark an area wherein boating is restricted. Castle may suggest such points as speed limits. They are white through two horizontal orange bands and also an orange one on two opposite sides. Within the orange circles will certainly be a black number or prize indicating the restriction. If they carry a light, the irradiate is a yellow flashing (Fl) 4 seconds, light.

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

Information Buoys save information, by words or symbols, of attention to mariners, such together directions to marinas. They are white with two horizontal orang bands and an orange square on 2 opposite sides. If they bring a light, the light is a yellow flashing (Fl) four seconds, light.

Swimming Buoys note th perimeter that a swimming area. They space white. If they lug a light, the irradiate is a yellow flashing (Fl) four seconds, light.

Posted Command signs may be encountered from time to time. Lock will incorporate warnings such as No wake up Zones, No Anchorage Signs, speed Limit Signs, low Head Dam Signs, power Line Hazards and Pipe heat Hazards.

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

The worldwide Code Flag A (Alpha) is a Blue and White flag presented from the watercraft or dock indigenous which diving task is acquisition place.

The precise location of the diver is marked with a white buoy moving a red flag that not less than 50 centimeter square through a white diagonal line stripe prolonging from the reminder of the hoist come the bottom that the fly. If that is lighted, it has a yellow flashing (Fl) (four seconds), light.

All vessel operators have to stay clear and pass slowly.

Pleasure handmade operators have to take early and also substantial action to avoid areas where this buoys are displayed.


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