How luxury cruise ships get rid of wastewater

Recently, traveling on cruise liners is in great demand, and the vessels themselves are reaching such gigantic proportions that they have enough space on board not only for luxury cabin apartments, but also for golf courses, cinemas, ice rinks, water parks with many swimming pools and water slides, various restaurants and much more. Cruise liners of such incredible sizes can accommodate an incredible number of passengers, some of which are designed to relax more than 5 thousand guests. In connection with such a scale, it is interesting to ponder the question of where luxury cruise ships put numerous wastewater. As the pictures below show, there is no question of any cleaning systems there, they get rid of all sewage in the old way - they simply dump everything into the waters of the seas and oceans. According to experts, each year 3.8 billion liters of sewage are discharged into the seas and oceans.