Selection of techniques for reducing shipping NOx and SOx emissions

This paper develops a subjective generic methodology for providing ship owners with a transparent evaluation tool for selecting their preferred NOx and SOx control techniques. We quantitatively analyse the merits of the control methods available in marine air pollution control practice using data collected from shipping companies, shipyards and maritime academies. We also prioritize the applicable control techniques with respect to operational shipping environments.

► The paper develops a hybrid multiple attribution decision-making approach to assess maritime pollution remediation policies.
► Assesses control methods available using expert opinion from shipping companies, shipyards and maritime academies.
► Uses a case study to demonstrate how the methodology can rank emissions control options in the construction of a new vessel.