Why cruise ships need city-sized amounts of power
Keeping five thousand sunburned tourists entertained at sea requires an absurd amount of energy. Between the massive propulsion systems, air conditioning, endless buffets, casinos, and robotic bartenders, a single modern megaship can use up to 50 megawatts of power. That's literally enough to keep the lights on for about 50,000 homes, all so someone can ride a water slide in the ocean.

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