Which type of hull increases stability through an extension of the hull?

The correct choice is the displacement hull, which is designed to increase stability by utilizing its shape to displace water effectively. This type of hull is characterized by a broader beam and a deeper shape, which helps it cut through the water while maintaining a stable platform.

Displacement hulls operate at slower speeds and are generally used for larger vessels like cargo ships and sailboats. Their design allows them to remain stable in various water conditions, as the shape and size help prevent capsizing and enhance comfort for those onboard. The buoyancy created by the extended hull helps distribute the weight of the vessel evenly, contributing to stability.

Planing hulls, while they can provide good stability at higher speeds, do not inherently increase stability through hull extension; they are designed to glide on the surface of the water instead. Flat bottom hulls offer good stability in calm waters but can be less stable in choppy conditions due to their limited ability to adapt to wave movements. Round bottom hulls are efficient for moving through the water and provide a smooth ride, but their shape can make them less stable at rest compared to displacement hulls, especially in turbulent waters.

Thus, the design and characteristics of the displacement hull specifically contribute to increasing stability by effectively managing water displacement