The Nina left the Bay of Islands on May 29 and was headed for Newcastle, Australia. Neither the yacht nor the seven people on board have been seen or heard from since June 4. A search was launched on June 25 but was called off on July 4.
The yacht 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.
Family and friends of those on board have refused to give up hope, and have been fundraising to pay for private searches to continue.
Mr Funnell said a decision would be made about further searching at the close of play tomorrow.
"At this stage, they [the families] have enough funding for another day of searching.''