What do you think about of the longitudinal strength of a ship?

1.The bearing shear force and bending moment of ship in longitudinal direction can be got by using integration. Due to the existence of accumulative error, it is difficult to guarantee that bearing buoyancy and gravity of barge can be balanced completely. That is to say, shear force and bending moment at fore-aft endpoint of barge is not normally zero. Therefore, its shear force and bending moment curve should be treated with non-seal correction, which makes the shear and bending moment whose endpoint is not zero be assigned to curve according to linear proportional relationship.
2.The shear forces and bending moment can be obtained from fore and aft by using integration. Then, there exist two different shear forces and bending moment values in barge, and their average value can be the result of shear force and bending moment at this place