According to eurostat (https://ec.europa.eu/eurostat/statistics-explained/SEPDF/cac...) that is two thirds of freight volume and it probably still eclipses even rail transport in CO2 efficiency (until full CO2 free rail electrification), so this probably distorts things completely...
If you actually compare the emission fractions, you can see that the US uses much more CO2 per capita on transport compared to Europe (about 3 times as much!):
Maritime is around 37% if you only include domestic and intra-EU shipping.
Your report include all shipping that passes through any EU country’s EEZ. So if a ship coming from Africa headed to the US passes by the Azores. A portion of the tonne-kilometers of that ships voyage will show up in your report.
If you do the same thing with the US, the percent of maritime freight movement would also skyrocket.
According to eurostat (https://ec.europa.eu/eurostat/statistics-explained/SEPDF/cac...) that is two thirds of freight volume and it probably still eclipses even rail transport in CO2 efficiency (until full CO2 free rail electrification), so this probably distorts things completely...
If you actually compare the emission fractions, you can see that the US uses much more CO2 per capita on transport compared to Europe (about 3 times as much!):
https://ourworldindata.org/grapher/per-capita-ghg-sector?cou...