Live water systems free of sea life are one reason why the Chevron fleet runs more efficiently and economically than others. Since 1995, a number of Chevron Shipping Company's crude oil tankers have been operating smoothly with electrochlorination systems, the generators of hypochlorite that in turn prevent the fouling of live water cooling systems. Hypochlorite is the active ingredient required for bio-fouling control. Produced in situ by the cell assemblies of the electrochlorination unit, the system eliminates microbiological organisms and macroinvertibrates without the need for back flushing or periodic cleaning. This saves valuable time when ships are in dry dock for annual maintenance and repair. According to W.