What color is the quarantine flag used in vessel clearance procedures?

What color is the quarantine flag used in vessel clearance procedures?

• A. Yellow
• B. Red
• C. Blue
• D. Green

Answer: (A)

Quarantine signaling uses a solid yellow flag. This flag, known as the Q flag (or Quebec), is raised to indicate that a vessel is requesting free pratique and may be under quarantine health procedures. The uniform yellow color makes the signal universally recognizable, prompting port health authorities to initiate inspections and clearance steps. Other colors and patterns are used for different signals and do not convey quarantine status or the request for clearance, so yellow is the standard for this purpose.

Quarantine signaling uses a solid yellow flag. This flag, known as the Q flag (or Quebec), is raised to indicate that a vessel is requesting free pratique and may be under quarantine health procedures. The uniform yellow color makes the signal universally recognizable, prompting port health authorities to initiate inspections and clearance steps. Other colors and patterns are used for different signals and do not convey quarantine status or the request for clearance, so yellow is the standard for this purpose.