Some more trouble for the sailing world.

There are reports Oracle owner, Larry Ellison is setting up a world series of sailing featuring foiling catamarans.

And it's rumoured to already have a lot support, with teams from the US, Sweden, Japan and France being on board.

So is this a there a threat to the America's Cup?

Sail World NZ director, Richard Gladwell is releasing his book titled "Lone Wolf" - which is a behind the scenes look at Team NZ's victory.

Gladwell spoke with Mike Hosking about his new book

LISTEN ABOVE AS RICHARD GLADWELL SPEAKS WITH MIKE HOSKING