Carbon Footprint of Ferrys

45gm CO2e per passenger-kilometer

For CO2 from travel by ferry using
http://www.co2balance.com/
And for distances using
http://www.groningen-seaports.com/images/x_images/distances.swf

From To Naut m NautM/km Km Return Kms CO2 CO2/km
Amsterdam Hull 254 1.85 470.41 940.82 40000 42.52
Amsterdam Oslo 410 1.85 759.32 1518.64 90000 59.26
Amsterdam Murmansk 1400 1.85 2592.8 5185.6 230000 44.35

Ferry travel appears to be about 45gm CO2e per passenger-kilometer

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