Is it naive to suggest that they start digging a detour around this roadblock? I feel like it would take less time to do that than to try to move the ship out of the way. The Army Corps of Engineers can build waterways and levies like it's nobody's business.
This is not a small detour. These ships can't turn well so any detour would need to be very long and would take months to dig out (even if you had infrastructure in place to do it).
You could nuke it though. Throw a bunch of nukes in a line and you are good to go. :D