Bibby Polaris, dive support/heavy lift ship still on site but has moved to a location south of Grut Ness which suggests they are possibly now recovering the tail section and searching for any other parts on the seabed. Makes sense to do everything in one visit with a ship of that capability, I'm assuming sidescan, multibeam, ROV's and possibly divers onboard.
Live Ships Map - AIS - Vessel Traffic and Positions
For anyone getting a compressed map and big adverts on that link, 'refresh' or F5 expands the map and pushes down the ads.