This morning at approximately 11:30am a light plane flying over the water near Jackson Bay, South Westland, spotted some debris and a life raft on the shoreline and reported it to Police.
A helicopter was deployed to fly over the scene as onshore conditions were rough.
At approximately 2:40pm the helicopter located a man from the boat on a rock at Niels Beach. He has been transported to hospital.
Two other people who were on the boat, which is believed to have run into trouble on Thursday night, are still missing.
A helicopter is continuing to search the area in a bid to find the two outstanding crew members.
Police are in contact with the families of those affected and support is being provided.
More information will be provided when it becomes available.
ENDS
Issued by Police Media Centre