kaituki - coxswain (a person who gives the time to the paddlers on a canoe)
Kaituki, n. The man who gives the time to the paddlers in a canoe. = kaihautu.
Williams Dictionary
Haere koe hei kaituki i tā tātou waka.Go and be the chanter for our canoe.
Ka whakatika tētahi anō o ngā uri ariki, ka tū hei kaituki mō te waka rā.Another young chief arose and stood as chanter for that canoe.