DNV DNV CLASSIFICATION NOTES 31.7 [ Revised ]

Introduction

General

This Classification Note describes the scope and methods required for structural analysis of container ships and the background for how such analyses should be carried out. The description is based on relevant Rules for Classification of Ships, guidance and software.

The DNV Rules for Classification of Ships may require direct structural strength analyses in case of a complex structural arrangement, or unusual vessel size.

Structural analyses carried out in accordance with the procedure outlined in this Classification Note will normally be accepted as basis for plan approval.

Where the text refers to the Rules for Classification of Ships, the references refer to the latest edition of the Rules for Classification of Ships.

Any recognised calculation method or computer program may be utilised provided that the effects of bending, shear, axial and torsion deformations are considered, when relevant.

If wave loads are calculated from a hydrodynamic analysis, it is required to use recognised software. As recognised software is considered all wave load programs that can show results to the satisfaction of the Society.