The IMO is expected to update its current target of halving shipping emissions by 2050, from 2008 levels, but many are concerned about the maritime regulator's appetite to embrace interim targets. There is a lot of outside pressure pushing on the IMO because it is the climate negotiation of the summer. Gregor Fischer | Getty Images News | Getty ImagesIf stringent abatement measures are not implemented, the IMO has warned that shipping emissions could jump by up to 50% by mid-century. The 1.5 degrees Celsius goal is recognized as a crucial global target because beyond this level, so-called tipping points become more likely. Stefan Rousseau - Pa Images | Pa Images | Getty ImagesAsked which delegates were likely to seek to block calls for tougher climate targets, Maggs replied, "I think there are, of course, the usual suspects.

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Persons: Aoife O'Leary, Opportunity Green John Maggs, Maggs, Gregor Fischer, General Kitack Lim, " Lim, Stefan Rousseau Organizations: International Maritime Organization, Getty, Environment, Opportunity, Clean Shipping Coalition, CNBC, United, Chamber of Shipping, Associated Press, ICS Locations: London, decarbonize, Paris, Germany, Russia, Saudi Arabia, United Arab Emirates, Argentina, Brazil, India