Should it take more turns, in general, to move a basic unit by land, by sea, or by air? Why?
For whatever it’s worth, sea transporation and land transportation and air transportation in the real world exist on a continuum in which speed is inversely proportional to tonnage. Shipping by sea is (and has been since ancient times) the cheapest way to move vast quantities of goods over great distances, giant supertankers being a good example of this principle, but it has the disadvantage of being slow and (for obvious reasons) of being limited to oceans and seas and coastlines and certain rivers. Shipping by air is the fastest method, but it’s expensive and it involves much smaller payloads; it also has limitations imposed by landing strip requirements. Helicopters are more flexible in this regard than fixed-wing aircraft, but they have terrible fuel consumption, a short range, high maintenance costs and small payload capacities. Transporation by land is roughly half-way between those two extremes. Of the two land options, rail shipping is in many ways superior because combines fairly high speed with low fuel consumption and large payload capacity, but it’s limited to places where rail lines exist. Trucking is more versatile because there are more roads in more places than rail lines, and in a pinch some trucks can operate off-road, but they’re not as efficient at moving tonnage than trains.
