Secretary-General, International Maritime Organization & Chancellor, World Maritime University, International Maritime Organization since 1989. President, St Lawrence Seaway Authority, Canada, 1980-1989. President, Seaway International Bridge Corporation(s), 1980-1989.
Director, Canarctic Shipping Company, 1980-1989. Commissioner, Canadian Coast Guard, & Deputy Administrator, Marine Administration, 1975-1980. Deputy Administrator, Marine Services, Canadian Marine Transportation Administration, 1971-1975.
Director of Construction, St Lawrence Seaway Authority, 1964-1971. Director, Western Regional, 1960-1964, Division Engineer(s), 1955-1960, St Lawrence Seaway Authority. Resident Engineer(s), Special Project(s) Branch, Canadian Department of Transport, 1954.