A displacement hull is a boat design that moves through the water rather than on top of it, pushing aside a volume of water equal to the vessel's weight. These hulls have rounded, deep-draft shapes, offering superior stability, efficiency, and a smooth, comfortable ride, particularly in rough conditions, rather than high speed.

Key Characteristics:
Hull Speed Limitation: Displacement hulls have a maximum efficient speed governed by their length.

Efficiency: Because they do not need to "lift" onto a plane, they are highly efficient at slow-to-moderate speeds.

Stability & Capacity: Due to their heavy displacement and deeper draft, they handle heavy loads and rough seas well.

Common Usage: Used by most sailboats, traditional trawlers, and large commercial vessels.