A hull on a boat is the watertight body of the ship, boat, or flying boat. It is the part of the boat that rides both in and on top of the water. The hull may be fully or partially covered with a deck, and it is designed to either displace water or ride on top of it, depending on the type of boat and its purpose. There are different types of boat hulls, including flat-bottom hulls, round-bottom hulls, V-shaped hulls, and multi-hulled boats, each with specific characteristics and functions).
The hull is a critical component of a boat, as it affects the boats stability, speed, and performance in different water conditions. Understanding the type of hull a boat has is important for boaters, as it can impact the boats handling and suitability for various activities on the water.