At the first United States port of arrival upon termination of a foreign voyage, the ship's Master must file with the District Director of Customs as defined in 19 CFR 1.1(d) an affidavit on Custom's Form 3417 certifying that no equipment was purchased for or repairs made to the ship at a foreign port or if this is not the case, an affidavit on Custom's Form 3415 describing the equipment purchased and/or repairs made. If equipment was purchased and/or repairs were made in a foreign port, the Master simultaneously with or shortly after filing of Custom's Form 3415, must file a repair entry on Custom's Form 7535 together with invoices and required supporting documents.