Section 7: National character of ship to be declared before clearance

(1)
A collector of customs shall not grant a clearance for any ship under this Act unless the master of the ship declares to the collector of customs the name of the country to which the ship belongs.
(2)
A collector of customs shall upon the declaration made to him of the country to which the ship belongs inscribe the name of the country on the clearance.
(3)
A ship that attempts to proceed to sea without clearance of a collector of customs may be detained by the collector of customs until the declaration is made by the master of the ship.