Third IMO Greenhouse Gas Study 2014

Inventories of CO2 emissions from international shipping 2007–2012 29
difference results from amended statistics for domestic navigation and fishing, with IEA statistics updates for
marine fuels that are less than 2% of the values reported in the 2009 study. Lastly, the IEA statistics explicitly
designate whether the fuel data aggregate was originally allocated to vessels identified as international shipping,
domestic shipping or fishing. These categories are defined by IEA and described in the Key Definitions section
of this report. IEA definitions are consistent with the IPCC 2006 Guidelines.
Table 8 – Comparison of Second IMO GHG Study 2009 top-down ship fuel consumption data
(million tonnes)
Second IMO GHG
Study 2009
Current IEA
Marine sector Fuel type 2005 2007 2004 2005 2006 2007
International marine bunkers HFO 150 159 144 153 164 174
MDO 26 27 28 26 27 26
International total 176 186 172 179 191 200
Domestic navigation HFO 13 14 17 17 18 20
MDO 20 21 20 21 22 23
Domestic total 33 35 37 38 40 43
Fishing HFO 0 1 1 1 1 1
MDO 5 6 6 7 6 5
Fishing total 5 7 7 8 7 6
Total 214 228 216 225 238 249
% difference from Second IMO GHG Study 2009
5% 9%
Top-down results for the period 2007–2011
Fuel statistics allocated to international shipping, domestic navigation and fishing are presented in Figures 19–21
and Table 9. Figure 19 shows a generally flat trend in fuel oil consumption statistics since 2007 for each
shipping category (fishing, international navigation and domestic navigation). Similarly, Figure 20 shows a
generally increasing trend for gas/diesel while Figure 21 shows an increasing trend in natural gas sales in
domestic shipping and interannual variation in natural gas sales to fishing vessels.
Figure 19: IEA fuel oil sales in shipping 2007–2011