What is "uruaokapuarangi"

In Māori tradition, Uruaokapuarangi (also known as Uruao) was one of the great ocean-going, voyaging canoes (or waka) that was used in the migrations that settled New Zealand. Uruaokapuarangi is linked to South Island iwi, landing at Whakatū's Boulder Bank( Nelson). The waka was captained by Rākaihautū, who was accompanied by his wife Waiariki-o-āio and their son Rakihouia.