Section 4 Control engineering arrangements
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 5 Main and Auxiliary Machinery - Chapter 17 Steerable Bow Thrusters - Section 4 Control engineering arrangements

Section 4 Control engineering arrangements

Parent topic: Chapter 17 Steerable Bow Thrusters

4.1 General

4.1.1 Except where indicated in this Section, the control engineering systems are to be in accordance with Pt 6, Ch 1 Control Engineering Systems.

4.1.2 Steering control is to be provided for the bow thruster unit from the wheelhouse.

4.1.3 An indication of the angular position of the thruster(s) and the magnitude of the thrust are to be provided at the wheelhouse from which it is possible to control the direction of thrust.

4.1.4 Means are to be provided at the wheelhouse to stop the thrust unit.

4.2 Monitoring and alarms

4.2.1 Alarms and monitoring requirements are indicated in Pt 5, Ch 17, 4.2 Monitoring and alarms 4.2.2 and Table 17.4.1 Alarms for control systems.

Table 17.4.1 Alarms for control systems

Item Alarm Note
Thruster steerable — Indicator, see Pt 5, Ch 16, 4.1 General 4.1.3
Steering motor Power failure, single phase Also running indication at wheelhouse
Propulsion motor Power failure Also running indication at wheelhouse
Control system power Failure  
Hydraulic oil supply tank level Low  
Hydraulic oil system pressure Low  
Hydraulic oil system temperature High Where oil cooler is fitted
Hydraulic oil filters differential pressure High Where oil filters are fitted
Lubricating oil supply Low If separate forced lubrication

4.2.2 The alarms described in Table 17.4.1 Alarms for control systems are to be indicated individually on the wheelhouse and in accordance with the alarm system specified by Pt 6, Ch 1, 2.3 Alarm systems.

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