Coastguard New Zealand has alerted boaties in Northland to keep an eye out for a father and daughter sailing to the Bay of Islands who are feared missing.
Police are concerned for the safety of Alan Langdon, 49, and his 6-year-old daughter, Que Langdon, who left Kawhia Harbour south west of Hamilton in a 6-metre catamaran on December 17.
![A search is on for Alan Langdon and his daughter Que Langdon who were on board a 6-metre catamaran.](https://www.nzherald.co.nz/resizer/v2/L7NMRARKCYJZUQ5VJTIGP6JBX4.jpg?auth=1bebe300f5b216b02533c82915a405b3c12bbff2b54fd1cf5f4bbd48db698c23&width=16&height=30&quality=70&smart=true)
They have had no contact with their family since.
A Coastguard spokesman said a broadcast on all its channels had gone out including to those boaties in Northland waters, asking for any sightings of the missing catamaran.