flag of convenience

noun

(figuratively) Registration of a ship in a country chosen for its low taxes, permissive regulations, and so on.

The flag of convenience allows ships to be registered in a country other than their own.

意味（1）

(figuratively) Registration of a ship in a country chosen for its low taxes, permissive regulations, and so on.

意味（2）

(literally) The flag flown by a ship so registered (which flag then corresponds to the country of registration).