Flag of Convenience

A ship is said to be flying a flag of convenience if it is registered in a foreign country "for purposes of reducing operating costs or avoiding government regulations". However, it might very well be simply to take advantage of a country's infrastructure such as a world-wide network of consulates, fast service, etc.
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a ship registered under the flag of a nation, other than its own, which offers conveniences in the areas of taxes, crew, and safety requirements.