Cruise ships are massive vessels that require a substantial amount of fuel to power their engines and operate their various systems. The exact amount of fuel a cruise ship holds depends on its size, type, and itinerary, but it's not uncommon for these ships to carry millions of gallons of fuel.
The fuel used by cruise ships is typically a type of heavy fuel oil, which is thicker and more viscous than the gasoline used in cars. This type of fuel is more energy-dense, meaning it contains more energy per gallon, and it's also less expensive than other types of fuel. However, heavy fuel oil is also more polluting, so cruise ships are increasingly using cleaner-burning fuels, such as liquefied natural gas (LNG) and marine gas oil (MGO).
