PREVENTION OF AIR POLLUTION FROM SHIPS

The document argues that focusing only on new engines is insufficient to prevent a rise in global shipping NOx emissions due to low fleet turnover and rapid growth. It proposes a goal-based approach targeting 70-90% reductions for existing engines, citing technical feasibility and cost-effectiveness compared to land-based reductions. Suggested measures include technical retrofits like Selective Catalytic Reduction (SCR) and water emulsification, as well as operational restrictions and economic incentives for older vessels.

• Current global shipping is responsible for approximately 25% to 33% of all global nitrogen oxide (NOx) emissions.
• Due to low fleet turnover (approximately 2% scrappage rate) and expected growth in seaborne trade (approximately 4% annually), fleet-wide NOx emissions will increase unless reductions of at least 60% are implemented for both new and existing engines within two decades to maintain 2002 pollution levels.
• The document proposes a 'goal based approach' to NOx reductions for existing engines with a target goal of 70-90%.
• Various technical retrofits are available for existing engines to reduce NOx, including low NOx slide valve retrofits (up to 35%), water emulsification (up to 50%), SAM (30-50%), and Selective Catalytic Reduction (SCR), which can achieve 90% reduction.
• Reducing NOx from ships is significantly more cost-effective than reducing emissions from land-based sources; for example, the cost of shipping abatement is over 13 times lower than the cost for heavy-duty trucks and buses.

APA

Clean Air Task Force (2007). PREVENTION OF AIR POLLUTION FROM SHIPS. https://cdn.catf.us/wp-content/uploads/2019/11/21093055/4-7-FOEI-NOx_existing.pdf

Chicago

Clean Air Task Force. PREVENTION OF AIR POLLUTION FROM SHIPS. 2007. https://cdn.catf.us/wp-content/uploads/2019/11/21093055/4-7-FOEI-NOx_existing.pdf.

Wikipedia

{{cite press release |author=Clean Air Task Force |title=PREVENTION OF AIR POLLUTION FROM SHIPS |date=4 May 2007 |url=https://cdn.catf.us/wp-content/uploads/2019/11/21093055/4-7-FOEI-NOx_existing.pdf |access-date=23 October 2026 |via=Climate Insights Directory}}

BibTeX

@misc{cleanairtaskforce2007prevention, author = {{Clean Air Task Force}}, title = {{PREVENTION OF AIR POLLUTION FROM SHIPS}}, publisher = {Clean Air Task Force}, year = {2007}, month = may, url = {https://cdn.catf.us/wp-content/uploads/2019/11/21093055/4-7-FOEI-NOx_existing.pdf}, urldate = {2026-10-23}, note = {Indexed by Climate Insights Directory} }