The (1920) Jones act requires a US built, US flagged, US registered, US crewed vessel be used for transport between any 2 US portshttps://twitter.com/mattdpearce/status/912805320623235072 …
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Hawaii in particular is served by Matson/Pasha from the mainland and only one company, Young Brothers, goes inter-island.
It's basically cheaper to ship a log from South America to China than anything from LA to Hawaii using a boat.
I'm not as familiar with the specifics of shipping to PR as I am with how it works in my home state..
If the markets are similar, no Jones Act reprieve means a US shipping monopoly will (continue) to reap profits for all shipping to PR.
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