Five people have been rescued in the waters off of North Cape as search and rescue personnel continue to look for others.
Auckland's Westpac Rescue Helicopter said at 8am that it had responded last night to a search and rescue for a sunken vessel 200 metres off the coast of North Cape.
Five patients had been winched from the scene and taken to Kaitāia Hospital in a stable condition and five patients were still missing.
The Rescue Coordination Centre issued a brief statement which said they were leading a "significant operation" off North Cape - located at the northern end of the Northland and around 30km east and 3km north of Cape Reinga.
According to the centre, an emergency position-indicating radio beacon was activated by a vessel at about 8pm last night.