The new search started on Monday.
Family and friends of the seven missing crew members have been fundraising to keep the search alive after the official operation ended on July 4.
It was hoped more funding will come through tomorrow.
Mr Funnell said it would be confirmed in the morning whether the extra funding had come through, meaning further searching could go ahead.
"It costs about $20,000 a day,'' he said.
Nina left the Bay of Islands on May 29 and was headed for Newcastle, Australia. It is owned by professional captain David Dyche III, 58, and his wife, Rosemary, 60. They were on board with son David Dyche jnr, 17, and fellow Americans Evi Nemeth, 73, Kyle Jackson, 27, and 18-year-old Danielle Wright. Also on board was Briton Matthew Wootton, 35.