Section 3 Materials and components and arrangement
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Special Service Craft, July 2022 - Part 3 General Requirements and Constructional Arrangements - Chapter 7 Wind Propulsion Systems - Section 3 Materials and components and arrangement

Section 3 Materials and components and arrangement

3.1 Materials

3.1.1 The materials used in the construction of the mast and spars are to be manufactured and tested in accordance with the appropriate requirements of the Rules for the Manufacture, Testing and Certification of Materials, July 2022

3.1.2 For composite materials, see Pt 8, Ch 1, 2.5 Materials data sheet.

3.1.3 Where stainless steel rigging is employed, particular attention is to be given to the selection of the grade of material used, as some stainless steels are prone to stress corrosion cracking and consequent fatigue failure, the onset of which is not readily observed. Suitable insulation is to be provided between differing materials to avoid galvanic corrosion.

3.2 Components

3.2.1 Components for rigs are to be manufactured, tested and documented in accordance with Table 7.3.1 Summary of testing and associated documentation for rig components under a suitable quality control system.

Table 7.3.1 Summary of testing and associated documentation for rig components

Part Testing/inspection Verification;

final document to be issued

Mast and spreader tubes Visual inspection Materials properties certificate
Spars Visual inspection Materials properties certificate
Flettner rotor Visual inspection Materials properties certificate
Rigging wire and end connections Break load testing W - test certificate; or

Type approval certificate

Rod and carbon rigging systems Visual inspection Type approval certificate
Loose items Visual inspection CE or other agreed standard
Key:

W: witnessing by LR Surveyor

3.3 Arrangement

3.3.1 Drainage is to be provided to prevent the build-up of seawater and condensation within the mast structure.

3.3.2 Where appropriate, rigs should be coated internally with a suitable preparation.

3.3.3 Openings in the masts for entry and exit of running rigging or cables should be adequately compensated with insert plates, doublers or patching.

3.3.4 Standing rigging is to be effectively attached to the mast, deck and hull structure and is to be so designed that it cannot become unintentionally disconnected during operation.


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