A mast is a tall vertical structure on a ship or boat that supports the sails. It is essential for sailing vessels, as it helps harness wind power to propel the boat forward. Masts can vary in height and design, depending on the type of vessel and its intended use. In addition to sailing ships, masts are also used in other contexts, such as in telecommunications. For example, cell towers often have tall masts to hold antennas, allowing for better signal transmission. These masts are crucial for modern communication networks, enabling mobile phones and other devices to connect effectively.