Buoy - Wikipedia

File:Coast Guard Cutter Sledge sets buoy in Potomac River.jpg

Bell Buoy (2) - International Dictionary of Marine Aids to Navigation

File:Buoy.jpg - Wikipedia

Weather buoy - Wikipedia

Special mark - Wikipedia

Weather buoy - Wikipedia

Lateral mark - Wikipedia

File:Submarine Signal Buoy Apparatus to be attached to Bell-buoys.png - Wikipedia

Sonobuoy - Wikipedia

File:Bell buoy P 54 Comox Bar (164366301) (cropped).jpg

Surface marker buoy - Wikipedia

Drifter (oceanography) - Wikipedia

Rescue buoy - Wikipedia