The weight of a hull is measured using hydraulic cylinders pressurized up to 700 bar. The cylinders are positioned at strategic points along the structure and used to lift the hull in a controlled manner, allowing the load at each support point to be measured with high accuracy.

By monitoring the hydraulic pressure and knowing the piston surface area, it is possible to calculate the force exerted by each cylinder and thus determine the overall weight of the hull. It is a procedure that requires careful planning, precise pressure control, and a strong focus on safety.