Section 6 Control and monitoring

6.1.1 Control and monitoring is to comply with the requirements of Pt 16, Ch 1 Control Engineering Systems.

6.2.1 Where controllable pitch propellers are fitted with automatic or remote controls so that under normal operating conditions they do not require any manual intervention by the operators, they are to be provided with the alarms and safety arrangements required by Pt 12, Ch 1, 6.2 Automatic and remote controls 6.2.2, Pt 12, Ch 1, 6.2 Automatic and remote controls 6.2.3 and Table 1.6.1 Alarms.

6.2.2 For controllable pitch propellers for main propulsion, a standby or alternative power source of actuating medium for controlling the pitch of the propeller blades is to be provided. Automatic start of the standby pump supplying hydraulic power for pitch control is to be provided.

6.2.3 For controllable pitch propellers, a shaft speed indicator and a pitch indicator which shows the degree of pitch as a measure of the propeller blade or actuator movement are to be provided at each station from which it is possible to control shaft speed or propeller pitch.