Vessels sailing under the Anguilla flag are required to have on board this flag as part of flag state requirements that derive from maritime regulations in the International Code of Signals and the International Safety Management (ISM) Code. These codes are published by the International Maritime Organization (IMO) as an ongoing effort to reinforce maritime safety procedures and communications to the international maritime community. Fleet management companies and ship owners are responsible to ensure that each vessel in their respective fleets have the appropriate flag signage onboard to be in compliance. This flag is used to identify the flag state a vessel is sailing under and to communicate with other vessels under the provisions of the International Code of Signals.
The current official flag of Anguilla was adopted in 1990. The national flag of Anguilla consists of the modern Blue Ensign with the British Union Jack flag in the canton. The red, white and blue Union Jack flag in the canton is a combination of three older flags, specifically the red cross of St. George of the Kingdom of England (including Wales), the white saltire of St. Andrew of Scotland and the red saltire of St. Patrick, representing Ireland. The official Anguilla coat of arms is in the fly. The Anguilla coat of arms consists of three interlocking orange dolphins that appear to be jumping out of the sea, incorporating the “Dolphin Flag” of Anguilla that was used from 1967-1969. The orange dolphins represent unity, strength and endurance. The three dolphins are in circular motion, representative of continuity, against a white background over the blue sea. The white background of the Anguilla coat of arms symbolizes peace and tranquility, while the blue stripe representing the sea below is representative of faith, hope and youth.