What refers to a vessel's maximum length and width?

The term that refers to a vessel's maximum length and width is commonly known as "length and breadth." In maritime terminology, "length" denotes the longest dimension of the vessel from bow to stern, while "breadth" refers to the maximum width of the vessel at its widest point. This identification is crucial for various navigational and regulatory purposes, including determining stability, maneuverability, and compliance with harbor surface area limitations.

While terms like "draft," "beam," and "windage" relate to different dimensions and characteristics of the vessel, they do not encompass both the maximum length and width together as "length and breadth" does. The draft pertains specifically to the vertical distance between the waterline and the bottom of the hull, indicating how deep the vessel sits in the water. The beam denotes only the width of the vessel, and windage refers to the effect of wind on the vessel's surface area above the waterline, particularly during maneuvering. Thus, the proper terminology for a vessel's maximum length and width is indeed "length and breadth."