Section 4 Hull envelope framing

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 4 Offshore Support Vessels - Section 4 Hull envelope framing

Section 4 Hull envelope framing

4.1 General

4.1.1 The section moduli of side longitudinals, the main and 'tween deck frames are to be not less than kZ, cm³

where

k

=

1,25 in general

=

1,10 for ships with dedicated class notation standby vessel

Z

=

as required by Pt 4, Ch 1, 6 Shell envelope framing, Pt 3, Ch 5, 4 Shell envelope framingand Pt 3, Ch 6, 4 Shell envelope framing for the appropriate location.

4.1.2 Frames are not to be scalloped.

4.1.3 The scantlings of deck secondary stiffeners are to be in accordance with the requirements of Table 1.4.4 Cargo and accommodation deck longitudinals(1) or Table 1.4.5 Strength/weather, cargo and accommodation deck beams(2) in Pt 4, Ch 1 General Cargo Ships, where h₂ is to be taken as the specified design loading and not less than a design head of 3,5 m.

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