Section 1 General requirements
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 3 Transmission Systems - Chapter 2 Shafting Systems - Section 1 General requirements

Section 1 General requirements

Parent topic: Chapter 2 Shafting Systems

1.1 Application

1.1.1 This Chapter is to be read in conjunction with the General requirements for Machinery and Engineering Systems in Vol 2, Pt 1, Ch 1 General Requirements for Classification of Engineering Systems and Vol 2, Pt 1, Ch 3 Requirements for Design, Construction, Installation and Sea Trials of Engineering Systems.

1.1.2  For shafting enclosed within a gearbox, see Vol 2, Pt 3, Ch 1, 7 Design

1.1.3 For engine crankshaft and turbine rotor shafting, see Vol 2, Pt 2, Ch 1 Reciprocating Internal Combustion Engines Vol 2, Pt 2, Ch 2 Gas Turbines and Vol 2, Pt 2, Ch 3 Steam Turbines.

1.2 Power ratings

1.2.1 In this Chapter the dimensions of main propulsion component are determined from shaft power, P, in kW, and revolutions per minute, R. The values used are those defined in Vol 2, Pt 1, Ch 3, 4.3 Power ratings

1.2.2 For auxiliary machinery, the maximum continuous shaft power and corresponding revolutions per minute which will be used in service are to be stated.

1.3 Clutches

1.3.1 Clutches for single engine propulsion plants are to be provided with a suitable means for emergency operation in the event of loss of operating fluid systems. Their suitability for short term high power operation is to be demonstrated.

1.4 Safety

1.4.1 Means are to be provided such that in the event of a failure to a shaft or coupling the occupants of the ship are not endangered, either directly or by damaging the ship or its systems. Where necessary, guards may be fitted to achieve compliance with these requirements.

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