What is the purpose of the analysis?

What load do you want to apply to the submarine?

Please insert an image of the geometry.

To study the deformation caused due to the hydrostatic pressure.

The weight of the submarine is to be considered along with the buoyant force.

And also have one more question that while scaling down the length the scale used is 1:68, What should be the scale to scale down the mass?

Please do find the attachment of the geometry.