Monster cruise ships will berth in Auckland if plans by authorities go ahead.
A resource consent for mooring structure at the end of Queen's Wharf is expected to be lodged later this month.
The "mooring dolphin" is sunk into the sea floor off the end of a wharf. It provides another mooring point for long ships without spending much more money on extending a wharf.
Auckland Council organisations Auckland Tourism, Events and Economic Development, Panuku Development Auckland, Auckland Transport and Ports of Auckland are involved in the plan.
"It's early days and the project is not yet in the design stage, however early estimates suggest it could cost up to $10 million to build the interim infrastructure, which would be in place until there is a new fit-for-purpose cruise infrastructure in Auckland,"
said Steve Armitage, Ateed's visitor and external relations general manager.
"Without the right infrastructure Auckland could start seeing a decline in the number of visits from ships, meaning fewer passengers, GDP and jobs," he said.
The mooring dolphin could be ready in time for the 2017-2018 season, depending on time taken to get the relevant consents and progress building it.
Last summer's cruise season resulted in record spending, worth about $484 million to the national economy.
It was Auckland's biggest cruise season, worth $220 million to local economy - 15 per cent up on the previous season.
Figures released in the latest Cruise New Zealand Economic Impact Summary Report showed Auckland had 105 ship visits in 2015-16, carrying 230,800 passengers.
Auckland plays a key role in New Zealand's cruise sector as the country's primary exchange point - where passengers embark or disembark from their vessel, and where vessels are re-provisioned.