Last updated: July 17, 2019


Maritime flag: The ensign is the national flag worn by a vessel to indicate country of origin. It is the principal flag onboard; it is also the largest. It is worn on the highest position which is as close to the stern of the vessel as possible. Dimensions: 1 inch (horizontal axis) for each foot of LOA.

Illustration: The Red Ensign, worn by civilian British vessels.