Within the logistics fraternity all the focus is on shifting more onto water from air, road and rail. eCO2 per Tonne-km is roughly 1% of airfreight, 10% road and 50% of rail. I think this fact has allowed the Sea-freight community to keep off the hook until now. So great to see the realization that complacency of being the most efficient mode of transport should not get in the way of radical improvement. There are some appallingly old and inefficient shipping stock on the seas and the economics of the industry sometimes create odd conditions where lanes can be underutilized despite there being cargo available at a price above marginal cost. That being said if it was my choice to invest a tonne of CO2 anywhere it would be on shipping. Compared to Air transport which either moves only the wealthy or the goods and services that the wealthy consume, Sea freight impacts the lives and well being of almost everyone on the planet. So the question is... what the hell are we going to do about aviation?