What is the purpose of the longitudinal frame?

The purpose of the longitudinal frame is to provide structural integrity to the ship by running from bow to stern parallel to the keel. These frames are crucial components of a ship's hull structure, as they distribute the forces experienced during sailing, including waves and loads from cargo, throughout the length of the vessel. This helps in maintaining the shape of the hull and contributes to the overall stability and strength of the ship.

Longitudinal framing contrasts with other structural elements, such as transverse frames, which run across the width of the ship and support different structural functions. While longitudinal frames play a significant role in the rigidity of the hull and ensure it can withstand various stresses, other components, like buoyancy elements or deck supports, serve different purposes and are not primarily responsible for the framework that aligns with the keel.