The vessel repair statute (Section 466 of the Tariff Act of 1930, 19 U.S.C. § 1466) requires the payment of a 50 percent ad valorem duty on the cost of foreign equipment purchased for, or expenses of repairs made to, U.S.-flag vessels in a foreign country. The purpose of the vessel repair statute is to protect U.S. shipyards and to discourage vessel operators from taking their vessels abroad for the purpose of obtaining less expensive foreign repairs. The U.S. Court of International Trade determined that "section 1466 expresses the legislative policy designed to provide maximum protection to American shipyards." Mount Washington Tanker Co. v. United States, 505 F. Supp. 209, 214 (1980), aff'd, 665 F.2d340 (C.C.P.A. 1981). The U.S.