The shipping industry will not meet the International Maritime Organization (IMO) goal for reducing CO2 emissions by 2040 without hastening the expected pace of vessel replacements, a study by vessel classification organization American Bureau of Shipping (ABS) concluded.
IMO calls for the reduction of greenhouse gas emissions by at least 20pc by 2030, by at least 70pc by 2040, and to net zero by 2050, compared with 2008 base levels. Under a base case scenario, a 20pc reduction in CO2-equivalent emissions by 2030 is achievable on a full lifecycle basis, but a 70pc percent reduction by 2040 is not, ABS said.
Under the best case scenario examined by ABS, achieving IMO's 70pc target would require a significantly faster renewal of the vessel fleet to replace oil-fueled vessels or a higher degree of vessel retrofitting.
The three biggest categories of bunker consuming vessels — tankers, dry bulk carriers and container ships — are expected to follow a similar trajectory for marine fuel demand under the base case scenario, with conventional marine fuel accounting for more than 60pc of demand through 2035, ABS said.
Conventional fuel demand would decline to 38-44pc of marine fuel demand in the first half of the 2040s in the base case, ABS predicted. Methanol in that period would grow to about 35pc of marine fuel demand for tankers and container ships and about 22pc for dry bulk carriers. Ammonia and hydrogen demand would grow to about 13pc of tankers' marine fuel demand, 18pc of dry bulk carriers' demand and about 14pc of container ships' demand. LNG across the three vessel categories is expected at 4-6pc of bunkering demand in the early 2040s, with biodiesel at 5-9pc of demand.
