Earlier quoted context omitted.
Shipping over water is cheaper than shipping over land.
Only if you don’t price in environmental impact. Trains are much more efficient than ships in this regard and can be powered purely by green energy.
Is that really true? At least for CO2 emissions, other sources seem to imply the opposite, with ships being much more efficient than trains: https://truecostblog.com/2009/11/23/is-local-really-greener-...