К слову у короля гражданская специальность water management или как то так
Willem-Alexander is interested in sports and international water management issues. Until his accession to the throne, he was a member of the International Olympic Committee (1998–2013),[1]chairman of the Advisory Committee on Water to the Dutch Minister of Infrastructure and the Environment(2004–2013),[2] and chairman of the Secretary-General of the United Nations' Advisory Board on Water and Sanitation (2006–2013).[3][4]