What type of hull has a rounded bottom design?

A rounded bottom design typically refers to a hull shape that allows for greater stability and improved tracking in calm waters. This design minimizes the risk of capsizing and provides a smoother ride in less turbulent conditions, making it ideal for certain types of waters and activities.

Round-bottomed hulls have a distinct shape that allows the boat to gently roll with the waves, which can enhance comfort for passengers. They also facilitate easier navigation in shallow waters and can be more efficient for certain types of vessels, such as canoes or small crafts.

The other hull types, like multi-hulls, flat-bottomed hulls, and V-shaped hulls, are designed for specific purposes that do not feature the rounded characteristics of a round-bottomed hull. Multi-hulls, for example, provide stability through their multiple hulls but do not have a rounded design. Flat-bottomed hulls offer a stable platform but can struggle with rough water. V-shaped hulls are designed for cutting through waves and providing speed, but they possess a pointed bottom rather than a rounded one. This context makes it clear why the round-bottomed hull is appropriately identified as having the rounded design corresponding to the question.