Where this photo (attached below, please excuse the reflections!) was taken a few moments later, her maiden arrival into Southampton and into (the old) Ocean Terminal. I gather Vosper Thornycroft (from their nearby yard at Woolston, just the other side of the River Itchen) were then drafted in to help fix her turbines and help complete her final fitting out of which there was plenty left to do.
In the background of the second photo Rob has posted, I spy Canberra, perhaps Uganda, Windsor Castle, and two of the laid up Saxonia quartet that went on to become Sitmar ships judging by the light coloured funnels they are sporting and that one of the pair kept her dark Cunard hull colours whilst laid up in Southampton at least longer than her sister from seeing other photos, in the distance from where City Terminal is these days all the way down to Mayflower Terminal (the Western Docks?).