ABSTRACT

A ship’s structure is designed to withstand the static and dynamic loads to be experienced by the ship throughout its service life. Dynamics loads are exerted on the ship’s hull structure through the action of the waves and the effects of the resultant ship motions. The objective of the study is to analyse the vertical wave bending moment amidships of the vessel with the two different bow designs. The hydrodynamic loads are calculated with the computer program WASIM based on loading condition summary tables, ship hull offset tables and NAPA database of the vessel. From the loading condition summary tables, one full load condition is selected for the analysis. WASIM calculations have been carried out of the wave vertical bending moment amidships with a bulbous bow and a seaworthy bow. The considered loading condition is a homogenous full load condition. The nonlinear WASIM calculations of the vessel in the MLER (Most Likely Extreme Response) waves show that for full load condition, the highest wave vertical bending moment amidships of the vessel with the seaworthy bow is 2.6% higher than the counterpart value of the vessel with the bulbous bow.