Rescuers put out a notice to all ships in the Tasman Sea, requesting reports on any sightings of the ship. None came in.
The search from the air began, and it continues.
"While we have grave concerns for the crew on board Nina, we have not given up hope of finding survivors," mission controller Neville Blakemore said Friday.
The three airborne observers began focusing their lenses on New Zealand's beaches at 10:45 a.m. local time Friday (6:45 p.m. ET Thursday).
They have yet to see any sign of the Nina, the Dyches or their friends.