A client needs a closed cylindrical container that can traverse the sea in the vertical direction. The container is of steel make $($E$=200$ GPa, Yield strength$=400$ MPa and Poison$$s ratio $=0\mathrm{.}3),$ with the internal diameter of the container being $1\mathrm{.}5$ m and length being $10$ m$.$ The internal pressure in the tank can be controlled, and the maximum internal pressure can go up to $30$ MPa. Using MS Excel$/$Python$,$ perform the following tasks.

a$)$ Generic tool$/$computer program to predict the radial and circumferential stress profiles, their maxima and minima for given values of external pressure, internal pressure, thickness, etc. $(2$m$)$

b$)$ Consider yielding as a design criterion, develop the internal pressure control charts $($internal pressure vs$.$ vertical depth of cylinder from top sea level$)$ for thickness $(100$ mm$,200$ mm$,300$ mm and $400$mm$)(2$m$)$