船体 (shūntǐ) refers to the main structure or body of a ship or boat. It is designed to provide buoyancy, stability, and strength, allowing the vessel to float and navigate through water. The hull can be made from various materials, including wood, steel, or fiberglass, depending on the type of vessel and its intended use. The shape of the 船体 is crucial for its performance in water. A well-designed hull minimizes resistance and enhances speed, while also ensuring safety and durability. Different types of 船体 designs are used for various purposes, such as cargo transport, fishing, or recreational activities, each tailored to meet specific operational needs.