This study is an experimental investigation of the oceanic environment effect on a plate heat exchanger performance. Indeed, an experiment was carried out on a single plate of the exchanger to generate a turbulent airflow in which fine water droplets were injected into a horizontal vein where a heated plate was placed. The experimental tests were conducted for different air velocities and various water concentrations of freshwater and saltwater. In fact, two plate forms were considered: The first one is flat while the second is corrugated. Three main facts were observed in this work: i) the correlations linking the heat transfer rate to the operating conditions, ii) the effect of fog addition and the plate form on convective heat transfers and iii) the impact of the formation of a salt layer on the surface of the plate in the case of salt water.