Underwater welding is the process of connecting materials underwater in the presence of water. It is used to maintain
and improve the structure in marine and offshore applications. It's utilized for underwater pipeline maintenance, submerged
offshore oil drilling, and ship repairs. It can also be found in nuclear power plants and deep-sea mining. Underwater welding is
divided into two categories dry welding and wet welding. Dry welding entails enclosing the weld zone in a hyperbaric tank filled
with a gas mixture and welding at the prevailing pressure.