Today the world needs energy and when it cannot be piped, it has to be shipped. So how big can we get with those ships?
I suppose what limits size is the ability to be able to pass through, the Suez (Egypt) and Panama (Panama) canals.
But the deep oceans still have many possibilities for ship sizes. Other factors to the size of ships are docking,and manoeuvrability.
While all shipping is vulnerable to disasters through human failure or computer error. Spilt crude oil is not nice as was experienced in Alaska, U.S.A. The Shetland islands, N-Scotland, UK and off S-Wales. (UK).
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