Metals joining in the deep ocean

Needs, diving system limitations and pressure related technical problems are considered in an examination of deep ocean metals joining technology. Methods will soon be needed to repair structures at depths exceeding 300 meters but existing arc welding processes are limited in depth by pressure effects acting both on the diver and on the arc. Joining devices being developed for salvage operations are not constrained by diving considerations but are not adequate for most repair and construction work. New processes suitable for remote operation yet versatile enough for practical application are needed.