Jack Thatcher is a master navigator of Ngāi Te Rangi, Ngāti Ranginui, Ngāti Porou and Te Aitanga-a-Hauiti descent. For over 30 years, Jack has sailed more than 65,000 km of the Pacific Ocean, using traditional vessels and voyaging knowledge. He was a key stakeholder in the Tuia 250 Voyage which circumnavigated Aotearoa (New Zealand) in 2019. Jack works as a teacher and community leader, bringing traditional Māori knowledge to the public.