Architects, urban designers and boaties are lining up behind Heart of the City to oppose the port company's expansion plans.
The Heart of the City lobby group and the Auckland Architecture Association have each produced images to show the impact of the plans.
The images by the lobby group - at sea level and an elevated level - show the extension of Bledisloe Wharf by 250m and Fergusson Wharf by 50m.
Images produced by the Auckland Architecture Association show the impact of the view from the port at present and the impact from extending Bledisloe Wharf by 250m in the future.
Association spokesman Adam Mercer said that from Queens Wharf, Aucklanders could look all the way down the harbour to Browns Island and beyond, but that view would disappear if the expansion plans proceeded.