Comparison of the Ultimate Strength with and without Hatch Opening Subjected to Longitudinal Bending

The hatch opening has function to enter the load into cargo hold. One of ship type like this is Bulk Carrier. must be designed in suitable way because its influence ultimate strength since hull girder under longitudinal bending moment. application on ship’s deck should considered for design critreria. objective present study analyze with and without subjected cross section box used effect strength. This adopted simple calculation. Multiple Point Constrained (MPC) assumed remained plane during progressive collapse. material such as density, yield strength, elastic modulus poisson ratio are homogeneous. dimensions stiffeners also identic. only one difference stiffener number due at top girder. It found that smaller than one.