mistaTea - I'm not certain, but there is no positive indicaton that the OA itself is on the move. Sure, if the Senator is the tug boat, then that seems logical the rig is also on the move (unless the chain broke!) But it would have been a pretty quick trip for the rig, wouldn't it?
There's a poster on HC who has a paid, up-to-the-minute service of the rig's whereabouts. He hasn't posted yet to say it's on the move.
Ah well, we should know soon enough what the story is, and it has to be happening pretty soon.
Exciting times!