https://www.boat-ed.com/wisconsin/handbook/page/34/Non-Lateral-Markers/

... markers which are white and use orange markings and black lettering. ... Safe Channel Buoys indicate that the safe boating channel is between them.

https://pgolid.org/programs/safety-bouys/

Controlled Area: A white buoy or sign with an orange circle and black lettering indicates controlled or restricted areas on the water. The most common restriction  ...

https://www.answers.com/Q/White_buoy_with_orange_markings_and_black_lettering_What_type_of_buoy

White buoy's with orange markings and black lettering are aregulatory marker for boaters.

http://www.answers.com/Q/White_buoy_with_orange_crossed_diamond_and_black_lettering

What is indicated by a white marker buoy with an orange circle and black lettering? An orange circle means a controlled area, such as a speed limit, anchoring ...

https://www.nps.gov/voya/planyourvisit/lake-navigation-buoy-and-marker-reference-guide.htm

Jun 27, 2017 ... A white buoy or sign with an orange circle and black lettering indicates a controlled or restricted area on the water. The most common ...

https://www.safeboater.com/learn-the-rules/navigation-buoys.html

Learn more about the different types of navigation aid buoys: bifurcation buoys, ... A port hand day beacon, which has a black or green square, centred on a white background with a ... They are white with two horizontal orange bands and an orange circle on two ... Yellow in colour they carry an identification mark, or letter.

https://aceboater.com/en/buoys

A hazard buoy marks random hazards such as rocks and shoal. It is white with an orange diamond on two opposite sides and two orange horizontal bands.

https://answers.yahoo.com/question/index?qid=20170904000658AAAwfAy

This is a hazard buoy usually means there are rocks close by.

https://en.wikipedia.org/wiki/Navigational_aid

A navigational aid is any sort of marker which aids the traveler in navigation, usually nautical or aviation travel. Common types of such aids include lighthouses, buoys, fog signals, and day ... Most are white with orange markings and black lettering. They are used to give direction and information, warn of hazards and ...

http://www.rifleandrod.com/2012/07/reading-the-river%E2%80%99s-aides-to-navigation/

Jul 6, 2012 ... Buoys are the artificial markers we are most familiar with. ... They use orange markings and black lettering on a white buoy to warn of hazards ...