NORFOLK — While the rescue Sunday of seven Russian submariners took place half a world away, experts working around the clock near Norfolk Naval Station coordinated the dramatic effort. As many as 48 people laboring in four shifts orchestrated the rescue from the small Norfolk office. On Monday, they celebrated the success of their first mission and its significance in future life-saving operations. “I think the world does not yet know how much of a springboard this is really going to make,” said William Orr, coordinator of the International Submarine Escape and Rescue Liaison Office.