104 STAT. 518 PUBLIC LAW 101-380 —AUG. 18, 1990 "(2) when operating on the waters subject to the jurisdiction of the United States, including the Exclusive Economic Zone. "(b) This section does not apply to— "(1) a vessel used only to respond to a discharge of oil or a hazardous substance; "(2) a vessel of less than 5,000 gross tons equipped with a double containment system determined by the Secretary to be as effective as a double hull for the prevention of a discharge of oil; or "(3) before January 1, 2015— "(A) a vessel unloading oil in bulk at a deepwater port licensed under the Deepwater Port Act of 1974 (33 U.S.C. 1501 et seq.); or "(B) a delivering vessel that is offloading in lightering activities— "(i) within a lightering zone established under section 3715a))(5) of this title; and "(ii) more than 60 miles from the baseline from which the territorial sea of the United States is measured. "(c)(1) In this subsection, the age of a vessel is determined from the later of the date on which the vessel— "(A) is delivered after original construction; "(B) is delivered after completion of a major conversion; or "(C) had its appraised salvage value determined by the Coast Guard and is qualified for documentation under section 4136 of the Revised Statutes of the United States (46 App. U.S.C. 14). "(2) A vessel of less than 5,000 gross tons for which a building contract or contract for major conversion was placed before June 30, 1990, and that is delivered under that contract before January 1, 1994, and a vessel of less than 5,000 gross tons that had its appraised salvage value determined by the Coast Guard before June 30, 1990, and that qualifies for documentation under section 4136 of the Revised Statutes of the United States (46 App. U.S.C. 14) before January 1, 1994, may not operate in the navigable waters or the Exclusive Economic Zone of the United States after January 1, 2015, unless the vessel is equipped with a double hull or with a double containment system determined by the Secretary to be as effective as a double hull for the prevention of a discharge of oil. "(3) A vessel for which a building contract or contract for major conversion was placed before June 30, 1990, and that is delivered under that contract before January 1, 1994, and a vessel that had its appraised salvage value determined by the Coast Guard before June 30, 1990, and that qualifies for documentation under section 4136 of the Revised Statutes of the United States (46 App. U.S.C. 14) before Jgmuary 1, 1994, may not operate in the navigable waters or Exclusive Economic Zone of the United States unless equipped with a double hull— "(A) in the case of a vessel of at least 5,000 gross tons but less than 15,000 gross tons— "(i) after January 1, 1995, if the vessel is 40 years old or older and has a single hull, or is 45 years old or older and has a double bottom or double sides; "(ii) after January 1, 1996, if the vessel is 39 years old or older and has a single hull, or is 44 years old or older and has a double bottom or double sides;
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