Section 4 Control arrangements
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships, July 2022 - Part 5 Main and Auxiliary Machinery - Chapter 22 Propulsion and Steering Machinery Redundancy - Section 4 Control arrangements

Section 4 Control arrangements

Parent topic: Chapter 22 Propulsion and Steering Machinery Redundancy

4.1 General

4.1.1 This Section states the requirements for the installation of control, alarm and safety systems but does not signify that machinery spaces may be operated unattended. For unattended machinery space operation, compliance with Pt 6, Ch 1, 4 Unattended machinery space(s) - UMS notation is also required.

4.1.2 The control, alarm and safety systems required in Pt 5, Ch 22, 4.2 Bridge control are to comply with Pt 6, Ch 1, 2 Essential features for control, alarm, monitoring and safety systems .

4.2 Bridge control

4.2.1 The controls, alarms, instrumentation and safeguards required in Pt 5, Ch 22, 4.2 Bridge control 4.2.2 to Pt 5, Ch 22, 4.2 Bridge control 4.2.6 are to be provided on the bridge.

4.2.2 For PSMR, PSMR , PMR and PMR notations, means are to be provided to ensure satisfactory control of propulsion in both the ahead and astern directions when all main propulsion systems are functioning and when one propulsion system is not available.

4.2.3 For PSMR, PSMR , SMR and SMR notations, means are to be provided to ensure satisfactory control of steering when all steering systems are functioning and when any one steering system is not available.

4.2.4 Where required by Pt 5, Ch 22, 5.4 Essential services for machinery 5.4.3, isolation of essential services is to be carried out either automatically or manually from the bridge. Indication of the status of isolation arrangements is to be provided.

4.2.5 Instrumentation to indicate the operational status of running and standby machinery is to be provided for the propulsion systems, the supply of electrical power, steering systems and other essential services.

4.2.6 Alarms are to be provided in the event of:

  1. A fire in any machinery compartment.

  2. A high bilge level in any machinery compartment. Irrespective of the assignment of the UMS notation, the bilge level detection system and arrangements for automatically pumping bilges, if applicable, are to comply with Pt 6, Ch 1, 4.7 Bilge level detection.

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