Grimsby fish docks has landed a major deal to become a key base during construction of the UK's largest offshore wind farm development.
The new pontoon built as part of the deal at Grimsby fish docks
It has been chosen by energy giant Centrica as the base for vessels taking men and equipment to the Lynn and Inner Dowsing farms three miles off Skegness.
The £300m project, due to be completed by the end of 2008, will generate "green power" for 150,000 homes a year.
Port bosses said the deal would help secure its core seafood business.
Grimsby Fish Docks Enterprises chief executive Martyn Boyers said the contract was a "wonderful boost".
"It is good for Centrica, good for us and good for Grimsby, bringing with it jobs and encouraging further investment from others," he said.
A marine control office has been refurbished and a new pontoon built to accommodate the new facility.
"That investment in infrastructure has paid off with this significant, long-term deal, something we've been working on for some time," said Mr Boyers.
"The year-on-year revenue will underpin port revenue and help us continue to land fishing vessels in Grimsby.
"But we also see it as a catalyst for the future. We had to compete against other east coast ports to land the deal and we're delighted a company like Centrica has shown confidence in our ability to deliver."
Centrica's Head of Renewables, Alan Thompson, said: "Centrica is proud to play its part in helping regenerate the Grimsby port.
"Four ports were assessed in the Greater Wash area and Grimsby was chosen mainly because of its existing facilities and infrastructure.
"It will play a key role in helping to build pollution-free power generation for 150,000 homes - nearly half the number of households in Lincolnshire - delivering zero carbon emissions."