- permission to use a port given to a ship after compliance with a quarantine or on conviction that she is free of contagious disease.
- American Heritage 2000
Pratique is the license given to a ship to enter port on assurance from the captain to convince the authorities that he/she is free from contagious disease.
A ship can signal a request for "Pratique" by flying a solid yellow square-shaped flag.
See also: Quarantine