The term 'Large Crude Carrier' refers to a type of ship known as a supertanker. Supertankers are large vessels that are used to transport crude oil and other petroleum products across the world's oceans. They are typically over 300 meters in length and can carry up to 2 million barrels of oil. Supertankers are an important part of the global economy, as they are responsible for transporting the majority of the world's oil supply.