• UW FULL CLEANING: The term full cleaning refers to the removal of fouling from the entire underwater hull shell plates structure, additional areas, including propeller and shafts, overboard valves 
• INTERIM UW CLEANING: The term interim cleaning refers to the removal of fouling from the propeller, shafts, and rudders. Cleaning of other submerged ship systems may occur during this
gap. Interim cleanings are planned scheduled for all vessel between regular full cleanings to take advantage of fuel savings, Possible average of 50% represent fuel savings benefit of cleaning an entire hull due to

the cleaning of propeller blades.
• PARTIAL UW CLEANING – The term partial cleaning means to any cleaning where only specific areas of the ship vertical sides, rudders, sonar, bilge keels