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Red and yellow diagonal: man overboard.
Also known as: Oscar (phonetic), Red and yellow flag split diagonally
Divided corner to corner, red above and yellow below. It is the flag hoisted when someone is in the water, and the one most worth knowing on sight.
Flown alone, Oscar signals man overboard.
This is the meaning when the flag is flown alone. In a two- or three-letter group it is simply the letter, and the code book gives the group's meaning.
Contexts: Navigation
A rectangular flag divided from the upper hoist corner to the lower fly corner, red in the upper triangle and yellow in the lower.
One of the code's twenty-six letter flags.