Section 4 Alternative Lifting Points
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Construction & Classification of Submersibles & Diving Systems, July 2022 - Part 4 Exostructure, Stability and Corrosion Protection - Chapter 1 Exostructure - Section 4 Alternative Lifting Points

Section 4 Alternative Lifting Points

Parent topic: Chapter 1 Exostructure

4.1 General

4.1.1  Every manned submersible except an autonomous craft shall be provided with at least one alternative lifting point to which lifting arrangements can be attached in an emergency.

4.1.2 The alternative lifting point(s) should be of sufficient strength to:
  • Take the entire dry weight of the submersible including ballast and equipment as well as the divers staying in the submersible;
  • Allow the craft to be raised to the surface with any compartment flooded;
  • 150kg is to be allowed for each fully equipped diver and 95kg for each crew and passengers where applicable.

4.1.3  The structural analysis of the pressure hull and the exostructure shall take account of any loads arising from the use of these lifting points having regard to any dynamic forces which may occur and the worst anticipated operating or emergency conditions.

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