I expect dredging will be the main solution. Dredges are just slow moving, so they’ve taken a while to arrive.

I’d also expect some long reach excavators and/or draglines to be working from the shore and/or barges.

They probably just underestimated the stuckedness at first. Throw in some ineptitude and corruption, and you have this royal mess.

Really deep keel in not much water. At shore zero water. Ie It’s properly stuck

Are dredges normally expected to access underneath a ship? I thought under the typical use cases they have a clear work area.