Well, J.J. Abrams mixed that up a bit in the last Star Trek
I think you might see Polaris do a couple of different things in the course of our movie. Lacking magical shields it's kind of important that they not get hit by the other guy.
Maurice, one of our producers and a guy who knows a lot more about movies than I do, has pointed out to me that there are also reasons having to do with artful film editing that tend to support having vessels of all kinds move in certain directions and orientations. Returning to TOS as an familiar example, we most often saw the bridge of the Enterprise with Kirk facing screen right - and not by coincidence, the customary orientation of the ship in space was traveling forward from screen left to screen right (and they could
vary that if they chose, and occasionally did, despite the now well-known limitations of the filming miniature).