Desalination is the process of removing minerals (mostly salt) from seawater through physical and chemical processes to make it drinkable. Desalinated water is used on many seagoing ships and submarines.

When the foundation is in place, work begins on the main support structure. Almost all the parts for steel coasters are factory made and are shipped to the job site in sections. In the factory, the pieces for each support are cut and welded into the required shape using fixtures to hold them in proper orientation to each other.