The "Bravo flag" is a signal flag used in maritime communication. It is part of the International Code of Signals, which helps ships convey important messages at sea. The Bravo flag is colored red and indicates that a vessel is handling dangerous cargo, such as explosives or flammable materials. When the Bravo flag is displayed, it serves as a warning to nearby vessels to maintain a safe distance. This practice is crucial for ensuring safety on the water, especially in busy shipping lanes where the risk of accidents can be higher due to hazardous materials being transported.