Wyman, designed and built to conduct hydrographic and oceanographic studies and operated by a civilian crew, served with MSC under the technical direction of the Oceanographer of the Navy. Initially assigned to MSC Atlantic, Wyman was transferred to MSC Pacific on 16 November 1974 for a brief tour of duty that lasted into the summer of 1975. She was returned to MSC Atlantic at Port Canaveral, Florida, on 21 August 1975 and remained active with that fleet into 1979.