Section 11 Shafting systems

Clasification Society 2024 - Version 9.40

Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Naval Ships, January 2023 - Volume 2 Machinery and Engineering Systems - Part 1 General Requirements - Chapter 3 Requirements for Design, Construction, Installation and Sea Trials of Engineering Systems - Section 11 Shafting systems

Section 11 Shafting systems

11.1 Design

11.1.1 For details of design requirements, see Vol 2, Pt 3, Ch 2 Shafting Systems

11.2 Construction

11.2.1 Boring of the sternframe, fitting of the sterntube and bearings and aligning the shafting are to be carried out to a formal traceable procedure.

11.2.2 Before boring the sternframe, the ship's structure should be generally complete to the upper deck and to the engine-room forward bulkhead.

11.3 Shaft bearing clearances

11.3.1 After installation of the screwshaft and any shafting installed in bearings fitted in stern bushes or shaft bearings in ‘A’ and ‘P’ brackets, the bearing clearances are to be measured and recorded. The records are to be placed on board.

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