3.3 navigation Buoys

Bifurcation Buoys

Bifurcation buoys room lateral mechanism buoys that show the junction the channels. They have actually three alternate stripes of red and green and the peak stripe indicates the location of the preferred, or main, channel.

You are watching: You see a white buoy with an orange square and black lettering. what does this buoy tell you?

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

Fairway Buoys

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

Day Beacons


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

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

A port hand day beacon, which has actually a black or eco-friendly square, centred ~ above a white background through a environment-friendly reflective border, point out the harbor 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 also of a reflective material.


A starboard hand job beacon, which has actually a red triangle centred on a white background v a red reflective border, marks the starboard hand side of the channel or a danger and must be kept on the starboard side as soon as proceeding upstream.


Ranges consist of 2 markers, upside under to each other with one well in former of the other. The front mite is lower than the behind marker.

They administer a encourage track because that navigators as soon as both marks room in line. The operator will watch one mite on optimal of the other.

Special purpose Buoys

There are a variety of special function buoys that mark every little thing from anchorages come swimming locations to no-wake zones and danger areas.

Pleasure craft operator must discover to determine these buoys and also know what lock mean.

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

Keep the end Buoys


Keep out Buoys mark an area whereby boating is prohibited. They room white with two horizontal orange bands and an orange cross inside an orange diamond on 2 opposite sides. If they bring a light, the light is a yellow flashing(Fl) 4 seconds, light.


Control Buoys note an area wherein boating is restricted. They may show such things as rate limits. They space white through two horizontal orange bands and an orange circle on two opposite sides. Within the orange circles will be a black figure or symbol indicating the restriction. If they lug a light, the light is a yellow flashing (Fl) 4 seconds, light.

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

Information Buoys contain information, by indigenous or symbols, of attention to mariners, such as directions to marinas. They room white v two horizontal orang bands and an orange square on 2 opposite sides. If they carry 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 carry a light, the irradiate is a yellow flashing (Fl) 4 seconds, light.

Posted Command indicators may be encountered native time to time. They will include warnings such as No wake up Zones, No Anchorage Signs, rate Limit Signs, low Head Dam Signs, power Line Hazards and also Pipe heat Hazards.

Cautionary Buoys are supplied to warn mariners of dangers such as firing ranges, gyeongju courses, seaplane bases, web traffic separations, underwater structures and areas wherein no safe v channel exists. Yellow in colour they carry an identification mark, or letter. If they have actually a topmark, that is a solitary yellow "X" shape. If lighted, the light a yellow flashing (Fl) four seconds light.

The worldwide Code Flag A (Alpha) is a Blue and also White flag displayed from the boat or dock indigenous which diving activity is taking place.

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

All ship operators must stay clear and also pass slowly.

Pleasure craft operators should take early and substantial activity to avoid locations where this buoys are displayed.


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