All the time remote control cameras are feeding back underwater images to eight TV screens so the 11-strong team in the barge control room can be sure the ship is responding as they expect.
Five TV cameras with five microphones have been placed on the highest deck of the Concordia; the images and sounds will be monitored during the parbuckling so engineers can make adjustments if they think the ship is twisting or straining beneath the weight of the pull on it.
So crucial is the monitoring process that as well as the floating control room a 'salvage room' has been built onshore incase of any breakdown between the Costa and those overseeing the process to right her.
The brother of a waiter whose body has not been recovered from the Costa Concordia, hopes the search team will find his remains.
The operation to shift the stricken Costa Concordia ship from the rocks off the Italian island of Giglio has been completed.
Engineers successfully shifted the wreckage of the stricken ship from rocks, but the salvage operation is expected to go on into the night.