Originally Posted by FlyiMetro
Where is the state of Florida? They have no seaports?
Florida isn't that great for seaports. The most important factors are rail connectivity and amount of population within a 1 or 2 day truck drive (the former is particularly important on the west coast, the latter on the east cost). Florida doesn't do so hot on either.
There is a considerable local market, which helps, and Jacksonville is reasonably good for the above metrics, but overall the state is not as hot a place for shipping as you might think given the huge chunk of coastline it controls. It's still probably high up there if you add up all of its many ports.
Of course, tonnage is just one measure of port importance. Certain materials have huge tonnage transferred per ship call, but aren't really very high value goods. Other materials have low tonnage per ship call (automobiles, for instance), but are very high value goods.