Vertical white with an orange diamond, and orange bands above and below the diamond,
The word is buoy.
Life Buoy.
This is a mooring buoy or mooring ball. They are used in either a public or private capacity to moor your vessel to. In a way it acts as an anchor for your vessel. Instead of dropping an anchor though, you simply pull up to the buoy and slip on a line (rope) and make fast. It also the ONLY acceptable buoy you may do this to.
An anchor buoy is a small buoy attached to an anchor by a light line and used to indicate the position of an anchor.
Achoragae area
Floatation device. Life buoy. Mae West. Cary float.
Yellow buoys are used to caution boats to stay away from them. They can be used to indicate that there are underwater pipes, dredged lines or a shoal area. Yellow is used as a general warning on buoys, but those that are all yellow should be kept away from.
a horizontally marked red and black buoy used to mark the division of sea lanes when moving inward from the sea.
blue stripe
Giant Voice
warning
"Can" buoys are navigational aids. they are black / green and have a flat top. They represent the right side (starboard side) of the navigational waterway when heading north or east. The left side of the waterway (port side) is designated by a red buoy with a pointed top. It is referred to as a "nun buoy" as opposed to "can buoy."