104 STAT. 514 PUBLIC LAW 101-380—AUG. 18, 1990 (B) by adding at the end the following: "(2) This part applies, to the extent consistent with generally recognized principles of international law, to a foreign vessel constructed or adapted to carry, or that carries, oil in bulk as cargo or cargo residue involved in a marine casualty described under subsection (a)(4) or (5) in waters subject to the jurisdiction of the United States, including the Exclusive Economic Zone.". (c) TECHNICAL AND CONFORMING AMENDMENTS.—Section 9(a) of the Ports and Waterways Safety Act (33 U.S.C. 1228(a)) is amended— (1) in the matter preceding paragraph (1), by striking "section 4417a of the Revised Statutes, as amended," and inserting "chapter 37 of title 46, United States Code,"; (2) in paragraph (2), by striking "section 4417a of the Revised Statutes, as amended," and inserting "chapter 37 of title 46, United States Code,"; and (3) in paragraph (5), by striking "section 4417a(ll) of the Revised Statutes, as amended," and inserting "section 9101 of title 46, United States Code,". SEC. 4107. VESSEL TRAFFIC SERVICE SYSTEMS. (a) IN GENERAL. — Section 4(a) of the Ports and Waterways Safety Act (33 U.S.C. 1223(a)) is amended— (1) by striking "Secretary may—" and inserting "Secreary—"; (2) in paragraph (1) by striking "establish, operate, and maintain" and inserting "may construct, operate, maintain, improve, or expand"; (3) in paragraph (2) by striking "require" and inserting "shall require appropriate"; (4) in paragraph (3) by inserting "may" before "require"; (5) in paragraph (4) by inserting "may" before "control"; and (6) in paragraph (5) by inserting "may" before "require". (b) DIRECTION OF VESSEL MOVEMENT.— (1) STUDY.— The Secretary shall conduct a study— (A) of whether the Secretary should be given additional authority to direct the movement of vessels on navigable waters and should exercise such authority; and (B) to determine and prioritize the United States ports and channels that are in need of new, expanded, or improved vessel traffic service systems, by evaluating— (i) the nature, volume, and frequency of vessel traffic; (ii) the risks of collisions, spills, and damages associated with that traffic; (iii) the impact of installation, expansion, or improvement of a vessel traffic service system; and (iv) all other relevant costs and data. (2) REPORT.— Not later than 1 year after the date of the enactment of this Act, the Secretary shall submit to the Congress a report on the results of the study conducted under paragraph (1) and recommendations for implementing the results of that study. SEC. 4108. GREAT LAKES PILOTAGE. (a) INDIVIDUALS WHO MAY SERVE AS PILOT ON UNDESIGNATED GREAT LAKE WATERS.—Section 9302(b) of title 46, United States Code, is amended to read as follows:
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