This creates a greater need for the ship's air-conditioning units which, when cooling, produce a considerable amount of Co2 gas that is harmful to the ozone layer.
Lokhu kudala isidingo esikhulu samayunithi wokupholisa umoya womkhumbi okuthi, lapho upholile, ukhiqize inani elithile legesi le-CO2 elimazayo ungqimba lwe-ozone.