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A yellow buoy with a yellow cross topmark.
Also known as: Yellow buoy, Cautionary mark
A special mark is yellow with a yellow saltire topmark and indicates something other than navigation — a cable, an outfall, a spoil ground, a racing mark. Its meaning is not in the mark but on the chart, which is unusual in a system built to be read without one.
Marks a feature identified on a chart or in a notice rather than a navigational hazard: cables, outfalls, spoil grounds, recreation areas.
Contexts: Navigation, Maps
Requires the chart to be read, since the mark itself says only that something special is here and not what.
Contexts: Navigation, Maps
A buoy of any shape painted one flat colour carrying a topmark of two crossed bars set at a slant.