Figures explained

Grey: Projected CO2 emissions for year end 2011
Red: Projected bunker fuel spend during 2011
Green: Projected CO2 emissions and bunker fuel spend for year end 2011, with 30% efficiency savings applied.

Figures based upon IMO projections of GHG growth A1B Scenario, (Source: Fig 1. ICCT White Paper 11 – July 2011). These estimates assume business as usual with an increase of 3% in economic growth rate corresponding to growth in the transport demand, composition and activity of the world's shipping fleet.

It is estimated that GHG emissions from international shipping contribute 870 mmt of CO2 to the atmosphere, with an additional 180 mmt attributable to domestic and inland ships in 2007, for a total of 1050 mmt. Under the IMO's scenario analysis, shipping-sector CO2 is expected to climb to between 2,500 mmt and 3,650 mmt by 2050. These are long-run projections and there may be deviations from the trajectories due to market volatility in the short-term.

The maritime industry can reduce its GHG emissions by between 150 million metric tons of CO2 (lower bound) and 520 million metric tons of CO2 (upper bound) with an expected 320 million metric tons of CO2 per year with negative marginal abatement costs (i.e., while improving overall industry costs).

This is on the order of 13 to 46 percent of the 2020 BAU case.

CO2 Emissions Wasted fuel burnt 2011 CO2 at 30% efficiency
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Owner & Operator

Shipowners and operators are increasingly being scrutinised on the eco-efficiency of their vessels; augmented by the July 2011 decision by IMO to implement the Energy Efficiency Design Index (EEDI) for newbuild vessels – to start in 2013.

All vessel owners and operators, of old and new ships, will be required to maintain a Ship Energy Efficiency Management Plan (SEEMP), which incorporates best practices for the fuel efficient operation of ships, such as better speed management throughout a ship’s voyage and the introduction of both newbuild and retro fit energy efficiency technologies. Efficiency measures can significantly reduce fuel consumption and, consequently, CO2 emissions.

Moreover, and crucially, CO2 reduction directly correlates to fuel efficiency and savings in fuel costs.

There is little incentive for owners to make large-scale investments to improve the efficiency of their ships, when the shipper/charterer of the vessel will benefit from the savings – termed “The Spilt Incentive Issue”.

The Carbon War Room has identified that there is appetite across the globe in shipping for a revolution in the way efficiency data is used, clean technologies and measures are financed and the way that contracts are written-up. Ship Owners and Operators should encourage efficiency to be factored into contracts between charterers, and between operators and ports, to encourage investment in money-saving efficiency technologies which will better their operations and business.

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