(2021) reveal in their recent publication "The urgent case for stronger climate targets for international shipping, in Climate Policy, that if the shipping sector is to play a part in meeting the Paris Agreement Goals, the IMO must strengthen its targets.
Excerpts from the abstract : The article re-assesses the international shipping sector’s initial greenhouse gas emissions reduction targets against the Paris Agreement goals. The analysis is based upon the latest data from the Intergovernmental Panel on Climate Change (IPCC) and International Maritime Organization (IMO) and uses the concept of carbon budgets to evaluate proportionate 1.5°C emissions pathways for the sector. The consequences of the resulting Paris-compliant pathways for shipping’s existing mitigation targets and strategy are discussed. The article concludes that significantly stronger short- and longer-term targets need to be set for the sector to be compatible with the Paris Agreement’s goals: 34% reductions on 2008 emissions levels by 2030, and zero emissions before 2050, compared with the sector’s existing target of a 50% cut in CO2 by 2050. Crucially, strengthening the target by the IMO’s strategy revision date of 2023 is imperative. The long asset lifetimes of ships and shipping infrastructure limit the speed of transition such that a delay of even a few years will dictate an untenable rate of decarbonization and increased risk of pushing the already challenging Paris goals out of reach...read here.