árbitro de recorrido
/ˈaɾβitɾo ðe rˌekorˈiðo/
n
English: course umpire · 水道裁判
Significado：Official who follows the competitors during the race on board a boat; the course umpire may disqualify a boat straying from its lane.
English: course umpire · 水道裁判