Section 5 Shell envelope plating
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 4 Ship Structures (Ship Types) - Chapter 7 Bulk Carriers - Section 5 Shell envelope plating

Section 5 Shell envelope plating

Parent topic: Chapter 7 Bulk Carriers

5.1 General

5.1.1 Longitudinal framing is, in general, to be adopted at the bottom, but special consideration will be given to proposals for transverse framing in this region. The side shell may be longitudinally or transversely framed.

5.1.2 The requirements of Pt 4, Ch 1, 5 Shell envelope plating are to be applied together with the requirements of this Section.

5.2 Bottom shell

5.2.1 The thickness of the bottom shell plating below loaded holds may be required to be increased for local strength considerations.

5.3 Side shell

5.3.1 The thickness of the side shell plating may be required to be increased for shear forces to satisfy the requirements of Pt 4, Ch 7, 3.2 Hull vertical bending stresses for flooded conditions 3.2.1.

5.3.2 The thickness of the side shell plating located between the hopper and topside tanks of single skin bulk carriers is to be not less than:

5.4 Additional requirements for ships not built to the IACS Common Structural Rules

5.4.1 Bulk Carriers not built to the IACS Common Structural Rules are to comply with the requirements of this sub-section.

5.4.2 The side shell plate between two points located at 0,125 l above and 0,125 l below the intersection of side shell and bilge hopper sloping plate or inner bottom plate is to be not be less than grade D/DH. The span of the side frame, l, is defined as the distance between the supporting structures.

5.4.3  In case of side frames built with multiple spans, the above requirements apply to the lower part only. (See Figure 7.5.1 Extent of Grade D/DH material for side shell plating.

Figure 7.5.1 Extent of Grade D/DH material for side shell plating
Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.