Australian authorities are continuing their search for the missing schooner Nina.
It is nearly a month since the last contact with the classic wooden vessel, and shoreside family members of some of the seven American crew members say they are desperate for answers.
An Air Force Orion plane left before dawn Tuesday and is focusing its search south of Norfolk Island, Rescue Coordination Centre New Zealand spokeswoman Rosemary Neilson told New Zealand Herald.
The classic 70-foot, 84-year-old boat was sailing to Australia from Opua in the Bay of Islands and last heard from on June 4.
"Obviously time is passing and concerns are increasing, but (searchers) remain optimistic," Neilson said.