Which flag code signifies "I am taking in, discharging, or carrying dangerous materials"?

The flag code that signifies "I am taking in, discharging, or carrying dangerous materials" is Bravo. This flag is part of the International Code of Signals and is specifically recognized for indicating the presence of hazardous materials on a vessel. The flag itself is a solid blue and is crucial for ensuring safety and communication at sea, particularly in instances where cargo may pose risks to other ships or personnel. Understanding the significance of this flag is essential for maintaining maritime safety protocols and effective communication in naval operations.