"You can definitely see it has punctured right into the cockpit right around where my steering wheel is."
Emirates Team New Zealand CEO Grant Dalton commented after assessing the damage.
"We know Ben well, he is a good guy but frustration is obviously getting to him, and the red mist came down, and it's a lot of damage in a time we can't afford it."
Other than the damage sustained it was a positive day for Emirates Team New Zealand. They won both races sailed against Land Rover BAR earlier in the day and Groupama Team France after both Oracle and Softbank Team Japan refused to race against the Kiwi team.
"Up until the last race with BAR we had a bloody nice day. We got the boat around the track really well, in really nice yachting conditions, but very unfortunate to get a hole in the boat in a practice race. I don't think Ben will be feeling too happy about it at the moment," skipper Glenn Ashby said.