Flag of Corran

The flag of the human kingdom of Corran from my book. Corran is a seafaring merchant kingdom, the capital city is the single largest port city in their world. It is also home to the "University of Corran" which teaches all varieties of magic as well as swordsmanship, diplomacy, cooking, etc...
The design in the flag is a stylized, crowned, anchor set in a series of concentric circles.