What is the primary signal of the Romeo Flag?

The primary signal of the Romeo Flag is associated with the preparation to replenish. This flag signifies that a vessel is ready to receive fuel or supplies. It is used in naval operations to communicate to other ships that they should prepare for an upcoming replenishment at sea. Understanding the meaning of the Romeo Flag is essential for smooth logistical operations and safe transfer of supplies between vessels.

Each of the other options refers to different signals or flags with distinct meanings in maritime communication. For instance, the signal for danger or distress involves different flags or signals that indicate an immediate threat, while medical assistance requirements would be indicated through other specific signals designed for emergencies. Lastly, the "do not pass" signal is crucial for maintaining safe navigation and port maneuvering and is represented with its own flag. Familiarity with these terms and signals helps enhance safety and efficiency in maritime contexts.