Team Japan skipper Dean Barker got an unplanned opportunity to test the crew's man overboard procedure in training run Bermuda last week.

Kiwi grinder Winston Macfarlane, who like Barker is a former long-serving member of Team New Zealand, was pitched overboard while testing the team's AC45X development boat on Bermuda's Great Sound.

Macfarlane was unhurt in the incident and was quickly fished out of the water.

It's not the first time Barker has seen Macfarlane go overboard. Macfarlane took an unplanned swim while racing for Emirates Team New Zealand in the 2011 AC World Series in Cascais, Portugal when a winch handle broke