July 2010-present: Associate Chair, Department of Ocean and Resources Engineering, University of Hawaii
(July 2007-June 2010: Chair, Department of Ocean and Resources Engineering)
1986-present: Hawaii Undersea Research Laboratory (HURL), School of Ocean & Earth Sciences & Technology, University of Hawaii at Manoa, Honolulu, Hawai'i, USA. (2008-present: Director; 2002-March 2008: Acting Director; 1991-2002: Associate Director; 1986-1990: Researcher)
1990-present: Cooperating Graduate Faculty, Department of Oceanography, University of Hawaii
1983-1986: Ocean Resources Manager, State of Hawaii, Ocean Resources Branch, Honolulu, Hawai'i, USA
1978-1983: Research Assistant/Lecturer, University of Hawaii at Manoa, Department of Oceanography, Honolulu, Hawai'i, USA
1973-1977: Exploration geologist doing field season and contract work for Chevron, Union Oil, Petro Canada, Noranda Mines and McIntyre Mines, looking for oil and base metal deposits.