"We have 460 international boats coming in each year and clearing Customs, then we're turning them away because there are no berths," he said. Visiting yachties spent on average $30,000 while in New Zealand.
The first two piers, opened last summer, were 100 per cent occupied, despite being in the middle of a construction site, and the new berths were already fully booked for Christmas. They would cater for boats from 12-35m, with many spaces suitable for catamarans.
Local marine businesses had already expanded in anticipation, and boat-building firm Bluefix had moved from Waipapa to new premises at the marina.
During Friday's opening four pou were blessed, along with an anchorstone and a carved touchstone, as acknowledgment of Maori history and culture.
The pou were carved by artists Rua Paul (Paihia) Renata Tane (Oromahoe) from totara trees felled to make way for the development. They were named after Hinemoana (goddess of the ocean), Rongo (god of peace), Tangaroa (god of sea creatures) and Tawhirimatea (god of wind).
Ngati Manu originally opposed the project, staging a series of protests. Arapeta Hamilton said the primary concern had been cleaning up the river, but research had shown most pollution originated upstream, not from the marina. The hapu was working with FNHL to improve water quality by setting up a nursery, planting trees and working with tourism operators to stop them discharging in the Bay.
Mr Nock put the changed relationship with the hapu down to a willingness to engage on both sides.
"It shows what you can achieve with open dialogue and understanding cultural differences and the views of both parties," he said.
By its fifth year the expansion would inject an extra $23 million a year into the economy through longer stays by visiting boaties and more boat repair and maintenance work.
The Opua Business Association was predicting a 44 per cent increase in turnover and about 60 new jobs.
A waterfront recreation area, including parking, lawns, boardwalks, barbecues, a stage and play area, is expected to open by the end of the year. No date has been set for construction of a second apartment and commercial building.
About 100 people attended the pre-dawn opening, including contractors, FNHL staff, Ngati Manu, National's Northland election candidate Matt King and Auckland-based Chinese consul Erwen Xu, who was in the Bay of Islands to meet with Far North District Council.
There was a small group of protesters, with Peter Clark of Waikino saying his family had lost access to fishing grounds when the marina was expanded.
