Yesterday afternoon (November 4) Police and ambulance responded to an incident on Lake Te Anau, where an occupant of a yacht had fallen into the water.
The boat was part of an annual race on the lake.
A Police spokesperson said several other vessels responded to the area to search and a man was located in the water a short time later.
CPR was commenced on a man in his 60s, however it was unsuccessful.
Police are making enquiries on behalf of the coroner.