What is different from 15th - century to 20th-century ships?

Fifteenth-century ships were primarily wooden vessels, often with sails and oars, designed for exploration and trade, featuring simple rigging and limited cargo capacity. In contrast, 20th-century ships evolved with advancements in materials such as steel and later, aluminum, enabling larger, faster, and more efficient vessels equipped with steam and diesel engines. Additionally, 20th-century ships often incorporated advanced navigation and communication technologies, enhancing their operational capabilities and safety. These changes reflect broader technological advancements and shifts in maritime commerce and military strategies over the centuries.