Code of Federal Regulations Title 46. Shipping § 46.68.5 Requirements for citizenship under 46 U.S.C. App. 883–1

(a) It must be incorporated under the laws of the United States, or any state, territory, district, or possession of the United States;

(b) A majority of the officers and directors of the corporation must be citizens of the United States;

(c) Not less than 90 percent of the employees of the corporation must be residents of the United States;

(d) Such corporation must be engaged primarily in a manufacturing or mineral industry in the United States or any territory, district, or possession of the United States;

(e) The aggregate book value of the vessels owned by the corporation must not exceed 10 percent of the aggregate book value of the assets of the corporation;  and

(f) The corporation must purchase or produce in the United States, its territories or possessions, not less than 75 percent of the raw materials used or sold in its operations.