What is the purpose of a multi-hull design in boats?

A multi-hull design in boats primarily enhances stability and speed. This design typically features two or more hulls, which significantly improves the vessel's stability by distributing weight over a broader area. As a result, multi-hull boats are less likely to capsize in rough waters compared to single-hull designs. The increased stability allows for better performance and speed, especially when sailing or navigating in challenging conditions.

Additionally, the shape of multi-hull boats can minimize resistance in the water, allowing them to achieve higher speeds with less power. This combination of stability and efficient design makes multi-hull boats popular for various applications, including recreational sailing and racing.

The other options do not align with the primary benefits of a multi-hull design. For instance, multi-hull boats typically maintain or even enhance cargo capacity and are designed for efficient navigation, which can influence the draft positively rather than increase it in a detrimental way.