Semi-Analytical Approach to Analyze the Hull Girder Ultimate Strength Considering the Influence of Side Hopper

A bilge hopper is one of the sections on ship bottom construction. The side hopper has an angle required in the national classification at the bilge hopper. This angle depends on the type of the ship’s hull, whether the ship has a single or double hull construction. This study aims to assess the impact of the side hopper angle at the bilge section on the strength of the ship structure. The bulk carrier and oil tanker are considered as the ship’s objects. The cross sections of the bulk carrier and oil tanker are assessed. It is thought that the cross-section of those ships remained plane throughout the gradual collapse. One frame space, measured along the length of the ship from one web frame to another, is considered for basic computations and analysis. The slope angle of the side hopper analysis is based on national classification regulations, which specify a slope angle of 35°. The semi-analytical approach is adopted to evaluate the ultimate ship hull girder strength. In this study, we compare and discuss the results obtained from the ultimate strength considering the influence of side hopper angle for oil tanker and bulk carrier between the existing condition and local classification.

Bulk carrier, Cross-section, Oil tanker, Semi-analytical, Ultimate strength

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