How long can a cruise ship stay out at sea without resupplying?

A cruise ship can typically stay out at sea for about 7 to 14 days without resupplying, depending on its size and capacity. Factors such as the number of passengers, food and water storage, and waste management capabilities play a crucial role in determining this duration. Most cruise lines plan itineraries to ensure regular stops for resupplying and to maintain passenger comfort and safety.