The other five days will be for the world championships, with the event split across two days of short-course racing at the Domain, and three days of high-speed racing at Ōhakea Air Force Base, with competitors having been given special permission to race on the tarmac.
"We're pretty lucky, as far as I understand, to even get in there, it's quite difficult to get in there because of security," Gower said.
At Ōhakea, Gower said the competitors will have the opportunity to reach up to 90km/h if the wind is strong enough.
"And when you're sitting with your bum only three inches off the ground, it must feel terrifically fast."
Gower said 118 people had entered for the events, as of August 29.
He said those entries came from Australia, the United Kingdom, Honduras and the Caribbean islands of Bonaire and Sint Eustatius, as well as local club members and competitors from throughout New Zealand.
He expected a couple of local sailors to be in with a chance at scoring high in the national and world championships.
"There's two or three in our club that had previous placings in the New Zealand races, and I believe there's two or three that may have sailed overseas in the worlds before."