What is the primary characteristic of a displacement hull?

A displacement hull is designed to move through the water by pushing it aside rather than rising over it. This characteristic is essential for boats that prioritize stability and comfort. Displacement hulls operate efficiently at slower speeds and are typically found on larger vessels, such as cargo ships and submarines.

In contrast, a hull that rises above the water, such as a planing hull, is typically optimized for high speeds. While maximizing fuel efficiency is important for all types of hulls, displacement hulls inherently achieve this through their design, which allows them to glide through the water instead of exerting excess energy. The need for higher clearances usually pertains to certain types of vessels or designs, but it is not a defining characteristic of displacement hulls. Therefore, the primary element that distinguishes a displacement hull is its ability to push water aside during movement.