Amazingly from the pictures the boat is there for over 1 hour removing a mine, knowing full well that they will be photegraphed, other ships will come alongside and without reference to the outcome if said device exploded.
But then again it may have been a dummy placed there with a plan for it not to go off to show the world a picture certain people wanted.
Strange how with all that camera equipment and surveillance they were not able to spot the boat that the people who placed it were on. Assumming tanker was making 10-12 knots then would have needed to be a reasonably fast and competent team to have done it without anybody spotting it twice on same ship.
Unless it was always a dummy and the ships crews crew who reported a "missile" / drone attack were the ones who called it right.