The experimental determination of the optimum values of welding parameters and consequently the optimum weld quality of shipbuilding and submarine steels which can be used in the future for the improvement of the quality of already existing underwater marine systems (including oil platforms, bridge columns and ships) and for the construction of new and unfamiliar underwater seastructures (including the submerged parts of Wave Energy Converters and Tidal Energy Converters) in many countries like Greece is an essential parameter from a technical, qualitative and economical point of view. The purpose of this study is the presentation, justification and discussion of the outputs of the welding experimental execution of three different steels (HY 100 steels, 316Ti and S355J2+N) which are currently used in shipbuilding and submarine constructions.

The experimental investigation of the corrosion resistance of welded shipbuilding and submarine steels with the optimum weld quality which can be used in the future for the improvement of the quality of already existing underwater marine systems (including oil platforms, bridge columns and ships) and for the construction of new and unfamiliar underwater sea-structures (including the submerged parts of Wave Energy Converters and Tidal Energy Converters) in many countries like Greece is an essential parameter from a technical, qualitative and economical point of view. This study presents, justifies and discusses the outputs of the experimental investigation of the corrosion resistance of three different welded steels (HY 100 steels, 316Ti and S355J2+N) which are currently used in shipbuilding and submarine constructions.

The material selection for the improvement of the quality of already existing underwater marine systems (including oil platforms) and for the construction of new and unfamiliar underwater sea-structures (including the submerged parts of Wave Energy Converters and Tidal Energy Converters) in many countries like Greece is an essential parameter from a technical, qualitative and economical point of view. The purpose of this review paper is to present a justified analysis of the proposed materials, explaining in more details the advantages of their properties and focusing on the applicable welding issues taking into consideration the previous existing experience from shipbuilding and submarine constructions.