Dr Mathias Jonas is the secretary-general of the International Hydrographic Organization (IHO). Prior to this appointment he was vice president of the Federal Maritime and Hydrographic Agency and national hydrographer of Germany with responsibility for sea survey and sea cartography. Being a mariner, Dr Jonas has been involved in integrated navigation since the beginning of the 1990s. As one of the responsibilities of his current position, he is the chair of the Hydrographic Commission on Antarctica.