The purpose of this report is to help policy makers and stakeholders understand results, limitations and advantages of the ship emissions estimations that will form the basis of a Mexican ECA designation proposal. STEEM has been used to support successful ECA designation applications to the IMO by the U.S. and Canada. Mexican officials and stakeholders should be confident that the results presented here are robust. The potential for substantial reductions in future ship emissions shown in this report means that an ECA would be expected to have considerable environmental and human health benefits. If Mexico decides to pursue an ECA designation, the evidence contained in this report can help support a credible proposal to the International Maritime Organization (IMO).You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.