The fortunes of Auckland and its port are inextricably linked - Auckland was founded where it is in large part due to the port.
But expansion constraints now mean the city and its port are about to head off in entirely different economic directions, their futures divided by widespread opposition, then a court decision, banning the port expanding into the harbour to cater for bigger ships.
As the port has pointed out, just as aeroplanes are getting bigger to carry far more passengers, so the shipping sector sees sense in operating much larger vessels and it is those larger vessels it needs to cater for.
The attempted port expansion is a topic that raises most people's ire and not a good one for dinner parties unless you're sure in advance that the room is with you, or you're spoiling for a battle.
But now that the dust has settled over this fight, and Auckland Council is conducting a new study, Auckland financiers are beginning to consider the next step.