Unconfirmed reports said two of the Indonesia crew have also been found safe but one was still missing at sea.
Indonesia’s national rescue agency told Reuters it had dispatched a rescue team to the survivors’ location but did not confirm any information about those rescued.
Father Peter Foote told reporters he wanted his son and friends to finish the remainder of their holiday.
“It’s been hard, but it’s all good now,” he told Sky News. “Can’t wait to talk to him. Wow, what an adventure he’s having, a story to tell. He’s come out the other end well so it’s all good.”
Accidents involving boats are common in Indonesia, an archipelago of more than 17,000 islands, as lax safety standards often allow vessels to be overloaded without adequate life-saving equipment.