The area also backs on to a large industrial park which creates a port-activity related potential area larger than Auckland's port and CBD area between Parnell and Ponsonby.
Mr Moore reiterated Northport's Vision for Growth would not be a ''proposal'' until the company could review feedback from shipping and transport industries, the public, local and central government, iwi, recreation groups and any other interested parties.
''It's a conversation starter, a vision based on what we believe is possible here.''
However, Northport's growth would be key to the growth of the upper North Island, he said.
Already there are fortnightly coastal shipping runs to Tauranga and Lyttelton, freighting Northland and imported products.
Expanding the facility would mean Northport was ready to meet forecast demand for shipping: ''A trade route to give Northland business more transport options.''
The vision does not include a dedicated cruise liner berth, and steers away from the topic of rail links and other transport issues which Mr Moore said are outside Northport's scope.
Port owner Marsden Maritime Holdings Ltd is a 50 percent shareholder/partner with Ports of Tauranga, and the board is 100 per cent for the Northport Vision for Growth, he said.