Central Coast Mariners are convinced they will become a major Asian power after a joint venture between Wyong RSL Club and the A-League club was rubber-stamped at the weekend. More than 300 Wyong RSL Club members attended an extraordinary meeting at the club on Sunday to vote on the joint-venture proposal.

The proposal, in which the Mariners will build a $40 million 120-room accommodation block, a function centre, playing and training fields, sport clinic, academy and office space at Club Tuggerah, went through unanimously.

"It was a very exciting day for the Mariners, Wyong RSL Club and the community," Mariners deputy chairman Peter Turnbull said.

"What it does is guarantee the viability of the Mariners and that is good for everyone."

The complex will be home for the A-League, Youth League and the W-League as well as the Mariners.

The existing club will be upgraded.

"This will be the pre-eminent professional sporting complex in Australia."

Mariners chairman Lyall Gorman said the complex would also house a football academy.

"It will be a home for the academy with holiday clinics and better facilities for football generally on the Central Coast," he said.

"There's still a lot of work to be done yet.

"We are working on the master plan in conjunction with Wyong Council."

The news comes after Sheffield United chairman and property magnate Kevin McCabe joined forces with Turnbull and Gorman to form the Mariners Trust.

The Trust will own more than 60 per cent of the club.