Indexing of ships' air emissions - an INTERTANKO Model

INTERTANKO has developed a model for indexing ships’ air emissions. This includes an indexing model for emissions of carbon dioxide (CO2), greenhouse gases (GHG), sulphur dioxide (SO2) and non methane volatile organic compounds (NMVOC) during transportation.  

By using the simple spreadsheet, which requires only data known to both the owner’s operations department and a vessel’s command, operational indications will be provided to assist shipping with decision-making in order to achieve more effective transportation, evidencing the industry's environmental awareness. Click here to view a guide on how to use the spreadsheet. 

The INTERTANKO guide is linked to the development by the IMO's Marine Environmental Protection Committee (MEPC) of a draft Resolution on greenhouse gases (GHG) from ships’ emissions in the context of Article 2.2 of the Kyoto Protocol. The draft Resolution seeks models to identify and develop mechanisms needed to achieve the limitation or reduction of GHG emissions from international shipping, to establish a GHG emission baseline and to develop a methodology to describe the GHG-efficiency of a ship expressed as a GHG-index for that ship.  

The MEPC has already produced draft Guidelines (MEPC Circular 471),which propose a GHG emission index that could be used by shipping on a voluntary basis (commercially) to assist in reducing the GHG by margins. IMO invited Governments and the shipping industry to use the draft Guidelines on a provisional basis and report the results to the IMO.  

The INTERTANKO model uses the IMO method for GHG indexing but, on the basis of assessments by the Bunker Sub-Committee and the Safety, Technical and Environmental Committee, it has expanded its scope.  

We invite members to use this model and share their experiences with the Secretariat. The feedback will be a valuable first-hand reference for further developments at the IMO. 

Contacts: Timothy Gunner or Dragos Rauta