Related Content America's Cup: Team NZ still ahead despite missing Chicago podium America's Cup: Team NZ fourth in Chicago Video Watch: Emirates Team New Zealand launch new boatsThe rules allow each challenging team to build only one full-size 50ft America's Cup Class (ACC) boat. The defenders offloaded their first test boat to Team Japan, who have used the prototype to test out their own design ideas. While Team NZ are firmly behind the eight ball, their rivals are still keeping a close eye on the developments at the Kiwi syndicate. Video will play in Play now Don't auto playNever auto playTeam New Zealand have taken a "step along the road to redemption" with the launch of their first custom-built test boat ahead of next year's America's Cup. The America's Cup class rules define much of the hull shape and structure, making these control systems the key technology battleground.

Source: New Zealand Herald June 21, 2016 02:38 UTC