several hundred meters of copper pipes tubes cables and hoses have been installed in and on the engine two thousand liters of diesel fuel per hour and hundreds of cubic meters of air in exhaust gases along with three thousand liters of oil every minute will flow through the engine all the lines are special home and custom-made products like the pipe for the sea water cooling system the fitter assembles the separate elements of the coiled pipe in a gauge anything that's slightly out is ground to size so that it fits with millimeter