Vessel accident oil-spillage: Post US OPA-90 |
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Authors: | Wayne K Talley Di Jin Hauke Kite-Powell |
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Institution: | a Department of Economics, Old Dominion University, Col Bus and Public Administration, Norfolk, VA 23529-0221, USA;b Marine Policy Center, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA |
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Abstract: | The vessel accident oil-spillage literature has focused on oil-cargo vessels, tankers and tank barges, implicitly assuming that these vessels incur greater accident oil-spillage than other (i.e., non-oil-cargo) vessels which just carry oil in their fuel tanks. This study investigates the validity of this assumption for the post US OPA-90 (Oil Pollution Act of 1990) period by investigating determinants of vessel accident oil-spillage, where one of the hypothesized determinants is type of vessel (including both oil-cargo and non-oil-cargo vessels). Tobit regression estimates of vessel accident oil-spillage functions suggest that tank barges have incurred greater in-water and out-of-water oil-spillage for the post OPA-90 period than non-oil-cargo vessels; alternatively, tankers have not incurred greater out-of-water (in-water) oil-spillage than non-oil-cargo vessels (except for freight ships). The policy implication is that greater attention needs to be given to reducing tank barge accident oil-spillage in the post OPA-90 period. |
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