Definition

Noun: A specific maritime signal flag, blue with a white square in its center, flown by a vessel to indicate it is ready to depart from port.

Usage

The term "Blue Peter" is used exclusively in nautical contexts. It is a visual signal for port authorities, other ships, and crew members that the vessel's departure is imminent. It is hoisted shortly before sailing.

Examples

• The ship raised the Blue Peter at 0600 hours, signaling its imminent departure.
• Look for the Blue Peter on the mast; it means they are ready to set sail.
• According to maritime tradition, the Blue Peter is flown when all passengers are aboard and cargo is secured.

Advanced Usage

• "To fly the Blue Peter": This is the standard phrase for displaying the flag.
  • The captain gave the order to fly the Blue Peter.
• The flag is part of the International Code of Signals. Its specific meaning ("I am about to sail") is universally recognized in maritime communication.

Variants and Related Words

• Departure signal: A general term for any signal indicating a vessel's readiness to leave port.
• Code flag "P": In the International Code of Signals, the phonetic name for the flag design (blue with a white center) is "Papa," but its meaning when used alone is "Blue Peter" (All persons should report on board as the vessel is about to proceed to sea).

Synonyms

• Sailing signal
• Departure flag

Notes on Meaning

• The term refers strictly to the flag itself and its specific nautical meaning. It is not used metaphorically in general English.
• Its name is believed to derive from the French "" (blue) and "" (to depart), or possibly from a corruption of "Blue Repeater," an older naval term.

Noun

1. a blue flag with a white square in the center indicates that the vessel is ready to sail