IMO’s Edmund Hughes has presented an update of international regulatory developments for prevention of air pollution and the energy efficiency of ships to the 11th Integer Emissions Summit (16-18 June) in Brussels, Belgium. The presentation to the marine vessels stream focused on providing information on the outcome of the recent IMO Marine Environment Protection Committee session (MEPC 68), including the decision to initiate the fuel oil availability review. Other issues highlighted were fuel oil quality, amendments to the NOx Technical Code 2008, the approval of a definition for Black Carbon, and the recent adoption of the International Code of Safety for Ships using Gases or other Low-flashpoint Fuels (IGF Code) by the IMO Maritime Safety Committee (MSC). An overview of the findings of the Third IMO GHG Study 2014 and the current state of negotiations for a new climate change agreement under the United Nations Framework Convention on Climate Change (UNFCCC) was also provided.