Marine crafts refer to various types of watercraft designed for navigation on oceans, rivers, and lakes. These include boats, ships, and submarines, each serving different purposes such as fishing, transportation, or recreation. Common materials used in their construction include wood, fiberglass, and metal, which provide durability and buoyancy. The design of marine crafts varies widely, influenced by factors like intended use, water conditions, and cultural traditions. For example, canoes are lightweight and often used for leisure, while cargo ships are built to carry large loads across long distances. Each type of marine craft plays a vital role in maritime activities.