Yesterday's 5.30pm rescue was one of several for the chopper, which also took a teenage boy to hospital on Monday after he suffered LPG exposure from an unlit hob and a man critically injured after being kicked by a horse at Waiuku.
The spokesman said the two boaties were airlifted back to the Kawakawa Bay wharf and left in the care of St John Ambulance staff.
Another helicopter crew were then sent out to Waiuku to help a man in his 50s kicked by a horse about 5.50pm.
He was flown to Auckland Hospital in a critical condition.
Three women from Onetangi, on Waiheke Island, were also separately transported to Auckland Hospital for treatment after one fell down a set of stairs in the dark and two others suffered medical complaints.