SDM tug is tied up with the starboard side to the end of a 132cm(52") aluminium barge.
And trying to crab the works to the left...
http://www.youtube.com/watch?v=4Sbgjw5Ee28You can see the forward drive thrusting 45 degrees forward and to the stern, and
the rear drive thrusting almost dead astern of the tug...Still getting a slight backward drift.
???