a flag hoisted on a committee boat to indicate the beginning of the five-minute start sequence for a particular class or section. The warning flag is taken down simultaneously with the race start. Sometimes, the code flag for the number that corresponds to the starting order of the class is used as the warning flag. At other times, solid-color flags in differing colors are used. Whatever flag is used, it has the same design and color scheme as the class or section’s class flag. The applicable Sailing Instructions indicate the starting order for multi-class races and may modify the sequence timing. See Racing Rules of Sailing for 2013 – 2016 rule 26. Compare to: attention flag and prep flag.