Dr. Roger L. Potash has joined the firm of David J. Seymour, Ltd., naval architects and marine consultants, as principal associate. In his new position he is responsible for project management, naval architecture, and ocean engineering design and analysis.

Formerly with Ocean Systems Division of Lockheed Missiles & Space Company for nine years, Dr. Potash has extensive experience in research and development in such diverse programs as OTEC (Ocean Thermal Energy Conversion), ocean mining, surface effect ships, offshore oil spill recovery, and 12-meter yachts. He conducted research in ship hydrodynamics at the Danish Ship Research Laboratory, and yacht design with Gary Mull and Sparkman & Stephens.