The Management Team – Nautical Archaeology Division


Steve Schmidt, M.A. – Senior Nautical Archaeologist

Mr. Steve Schmidt has nearly 26 years of commercial subsea experience. He received his B.A. from Towson State University and his M.A. in Maritime History and Underwater Research from East Carolina University. As Senior Nautical Archaeologist, Mr. Schmidt has consulted with numerous federal and state agencies to assist in fulfilling preservation responsibilities for submerged archaeological resources pursuant to Section 106 of the National Historic Preservation Act (NHPA). Mr. Schmidt’s experience includes surface air supplied diving / dive supervision, multi-component remote sensing survey, and remote-operated vehicle (ROV) work. His project work history includes Phase I, II, and III archaeological projects involving all classes of submerged cultural resources. He is knowledgeable and experienced in remote sensing data collection/processing, 3D bathymetric modeling, and geographic information systems (GIS). Prior to joining the Goodwin team, Mr. Schmidt served as an archaeologist for the U.S. Navy (Naval History and Heritage Command) for eight years and managed such high-profile projects as remote sensing survey of the Omaha and Utah Beach D-Day landings. He has worked in Texas, Arkansas, Oklahoma, Louisiana, Mississippi, Florida, North Carolina, Virginia, Maryland, Pennsylvania, Delaware, New Jersey, New York, Massachusetts, Maine, and Vermont.



Katherine Clevenger, M.A., R.P.A. – Nautical Archaeologist

Ms. Katherine Clevenger received her B.A. in Anthropology and History from Louisiana State University, and the M.A. in Maritime Studies from East Carolina University. Her thesis focused on recording, mapping, and interpreting shipwrecks using a ROV to acquire data for photogrammetric models. Ms. Clevenger is a PADI Divemaster and a TDI/SDI Technical Diver. Prior to joining the Goodwin team, she worked for the Bureau of Land Management as an Archaeologist in northern California. Ms. Clevenger has maritime archaeology experience in Florida, the Carolinas, and the Great Lakes region. She also has experience working in Bermuda, Spain, Italy, Costa Rica, Saipan, Peru, and Macedonia.



Christopher Dvorscak, M.A. – Maritime Archaeologist

Mr. Christopher Dvorscak earned his B.A. from Eckerd College and his M.A. from the University of West Florida in Anthropology/Historical Archaeology with a maritime concentration. Mr. Dvorscak has held supervisory positions during remote sensing surveys, low- to zero-visibility underwater site assessments and excavations, and artifact conservation for multiple sites, including Luna’s Fleet of 1559, paddle steamers operating in the lumber and recreation industries, and Civil War steamships. His project experience at RCG&A has consisted of analyzing and interpreting high-resolution geophysical and geotechnical survey data, evaluating submerged cultural resources on or below seabed, and coordinating with federal and state agencies in support of offshore renewable energy and gas pipeline projects, both in the Gulf of Mexico and Atlantic OCS waters. He holds a multitude of diving certifications including SDI Dive Master, NAUI Advanced Scuba Rescue Diver, and AAUS Scientific Diver.



Daniel Grose, B.A. – Dive Safety Officer

Mr. Daniel Grose holds a Bachelor of Arts from the State University of New York at Oneonta and post-baccalaureate credits in archaeology from the State University of New York at Albany. He has 19 years of experience with the Goodwin team, and he is the firm’s Dive Safety Officer and a member of the Dive Control Board. He is a full voting member of the American Academy of Underwater Sciences (AAUS) and is an Emergency First Responder Instructor, and a Divers Alert Network Oxygen First Aid for Scuba Diving Injuries Instructor. He holds technical diving certifications through Technical Diving International / Scuba Diving International (TDI/SDI) and a certificate from the Paul Hall Maritime Center, Seafarers Harry Lundeberg School of Seamanship in Basic Safety – Personal Survival Techniques.



Michael Twarog, M.S. – Marine Geologist

Mr. Michael Twarog earned both the B.S. and M.S. in Geology from East Carolina University, as well as certificates in both Geographic Information Systems and Hydrology. His thesis involved micropaleontology, geochemistry, geophysics, stratigraphy, and paleoceanography; that research focused on late Quaternary paleoenvironmental reconstruction of cored sediments he collected in the South China Sea, off the coast of Malaysia. As a Marine Geologist in RCG&A’s Nautical Archaeology Division, Mr. Twarog contributes a geological perspective to archaeological resource analysis, reviews high-resolution geophysical survey data, and helps evaluate offshore geologic formations for cultural resource potential. He has experience using Kingdom Suite, SonarWiz, ESRI GIS products; he also is an AAUS certified Scientific Diver. He has worked as a Marine Geologist in Louisiana, Texas, Massachusetts, Delaware, New Jersey, and Malaysia, and on terrestrial geological projects in North Carolina, Utah, New Mexico, and Colorado.