I am curious though - is a supertanker really more expensive to ship on a per mile basis than say a truck?
Obviously, shipping is exponentially cheaper than trucking or trains. I'm not sure about the comparison with pipelines. And yet... all modes are possible in our region, and all are used. I wonder why?
Obviously part of the answer has to do with scale and distance. Where I live, we are mid-way between two marine terminals so tankers go past every couple of hours, but all of our fuel comes by truck from the PDX terminal. We have the highest fuel prices in the region.
But why do we have both
tankers shuttling crude down from Alaska? One would think that the most efficient mode would win out. Hard to find anything rational about it on the internet.