This sub-category of Vessels, Submarines & Underwater Vehicles (VS) pertains to Cargo Ships (CS), which includes a cargo ship that converts sea water into hydrogen and oxygen gases, and then transports the liquid natural gases to shore. The cargo ship can also transport fresh water, which is filtered through a permeation process, and through purification, by using a process similar to electrolysis, which uses lasers, and a fuel cell, to convert the two gases back into electricity and purified water.