Section 4 Ships operating with unattended machinery spaces

4.1.1 Where it is intended to operate the propulsion machinery and associated systems whilst the machinery space is not continuously attended, the controls and alarms required by Pt 6, Ch 1, 3 Control and supervision of machinery, together with those given in Pt 6, Ch 1, 4.2 Alarm system for machinery are to be provided.

4.2.1 An alarm system which will provide warning of faults in the machinery and control systems is to be installed. The system is to satisfy the requirements of Pt 6, Ch 1, 2.3 Alarm systems.

4.3.1 Means are to be provided to ensure satisfactory control of propulsion from the bridge in both ahead and astern directions.

4.3.2 Instrumentation to indicate the following is to be fitted on the bridge:

1. Propeller speed.

2. Direction of rotation of propeller for a fixed pitch propeller or pitch position for controllable pitch propeller.

3. Clutch position where applicable.

4. Shaft brake position where applicable.

4.3.3 Means of control, independent of the bridge control system, are to be provided on the bridge to enable the watchkeeper to stop the propulsion machinery in an emergency. When the bridge control consists of a system with mechanical linkages only, such an emergency stop system is not required.

4.4.1 An automatic fire detection system, together with an audible and visual alarm system is to be fitted in the machinery spaces of Type N Open with flame screens oil tankers, oil and chemical tankers, chemical tankers and liquefied gas carriers when these ships have a propulsion machinery of 740 kW or more.

4.5.1 An alarm is to be provided to warn that liquid in the machinery space bilges has reached a predetermined level. The location of sensors for bilge alarms is to be clearly marked to allow identification by responsible personnel and the sensors are to be provided with means of access for inspection that does not require the use of tools.