August 9, 2023
The article series "How a CII approach to chartering can increase emissions and cost" presents common voyage examples highlighting the sometimes unfortunate correlation between CII rating, absolute emissions, and carbon cos. In this example, we compare voyage CII to absolute emissions of thee potential ships for a transatlantic MR voyage.
The above example is made from a spot charterer looking to load 37 000 tonnes of CPP in Rotterdam, discharging in New York between 11-25 November 2022. The Siglar Carbon Ship Finder located 70 potential ships. Ranking the ships by absolute emissions resulted in the below list, where the three ships are highlighted to exemplify how the CII rating does not always reflect absolute emissions.
The two first example ships are both located in Rotterdam and with no ballast leg they are amongst the top ten alternatives on the absolute emissions ranking. However, the first example ship is built in 2021 whereas example number two is built in 2008. This is the main explanation for the different voyage CII ratings.
For example ship three, the amount of emissions more than dobles. This is an older ship (2008), but the relatively long voyage from Sao Sebastiao Brazil with no cargo is rewarded in the AER calculations which is why this ship gets a top CII rating.
Go back to the full story with all examples.
See other examples:
European MR voyage: Comparing voyage CII to EU ETS carbon cost