Today’s desalination plants are rugged, durable and highly automated to meet the demands of operators and the crew, enabling them to meet schedule and mission with ample potable water production.In the days of old, marine distilling plants – then mostly steam – relied on archaic flash evaporators, which used steam to heat, power an air ejector, and ultimately create a vacuum whereby seawater would flash or boil and ultimately be distilled. The process would often occur over two stages and what did not flash would be pumped overboard as brine. Times have changed.