Because of severe environmental conditions, the deep submersible systems design engineer is faced with many challenging problems. Fluids are affected by varying pressures as well as temperature changes; seawater causes accelerated corrosion and contains many substances which can cause severe contamination problems in systems and system components. Much progress has been made in recent years in the design of lightweight, compact corrosion-resistant components, but the road is long and the end is not yet in sight.
