The US doctrine have always been fleet warfare with large formations of US ships sailing alone on the open sea or in some water they have complete dominance over. which is exactly the opposite environment to where the recent accidents have happens as the us is forced to operate single ships under IMO rules something I suspect is not a big part of the west point curriculum as no self respecting naval officer is going to be caught dead doing coast guard type work
The interesting and often forgotten thing here is that the Royal Navy who are way better sailors, and have far less cultural aversions towards playing coast guard then the USN failed miserably at a very similar mission in the icy waters around Iceland doing the 70ies and 80ies when Iceland decided to extend their economic exclusion zone beyond what the UK fishing fleets were willing to abide by.
The problem is that nobody in Washington want the US navy to start a shooting match within range of china's coastal missile batteries so none of the warships equipment is applicable for any confrontation. so all they can really do if the Chinese coast guard decide to board some "allied trawler" fishing in what China calls Chinese waters is lurk about a 1000 yards away and yell on the radio.