DNV DNV CLASSIFICATION NOTES 31.1 PDF

Introduction

The "Rules for Classification of Ships" require a direct structural analysis to be carried out in order to cope with the complexity in the loading of hulk carriers ::mil the: m11ny possible loading conditions. The scope for the analysis is to verify that stresses in the girder structure are within specified limits when the structure is loaded in accordance with the specified design load conditions.

The structural analysis is generally related to primary strength members of the midship region of bulk carriers arranged with double bottom and single or double side and without separate longitudinal bulkheads. However, additional calculations may have to be carried out for foremost and aftmost holds as the hopper/top wing tunk construction normally is changed significantly compared to the midship construction.

Where in the text it is referred to the Rules, the references refer to the July 1998 edition of "Rules for Classification of Ships".

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

Strength analysis carried out in accordance with the procedure outlined in the Note will normally be accepted as basis for class approval.

"NAUTICUS HULL" is a computer program offered by DNV that is suitable for the calculations specified in this Classification Note.