A cargo ship can be approximately considered as an elastic beam having uniform moment of inertia, I, length, L, elastic modulus, E. The net load distribution q(z) resulted from the balance between weight and buoyancy distributions is shown in the figure below. Note that the positive direction of q(z) is going upwards vertically. Based on the linear characteristics and the associated three key points (z,y)=(0, q0 ), (L/2,q0 ), and (L,-q0). Draw the shear force, and moment diagrams (functions of coordinate z)