Main propulsion and thruster controls and indication

PT 7, Ch 9, Section 3.1.4 states that main propulsion and thruster controls and indication should be provided at the navigation workstation. The requirements to the controls and indications are listed in PT 6, Ch 1, Section 2.6 Bridge control for main propulsion machinery, and PT 5, Ch 7, Section 5.3 Controllable pitch propellers and transverse thrust units.

PT 6, Ch 1, Section 2.6.1 & 2.6.2 state that satisfactory control of propulsion from the bridge in both ahead and astern directions should be provided, and that the following indications are to be provided:

•    propeller speed

·         direction of rotation of propeller for a fixed pitch propeller or pitch position for a controllable pitch propeller

·         direction and magnitude of thrust

·         clutch position if applicable

·         shaft brake position if applicable.

Section 2.6.3 and 2.6.4 state that the propeller speed, direction of rotation and propeller pitch are to be controlled from the bridge under all seagoing and maneuvering conditions. Remote control of the propulsion machinery is to be from only one control station at a time, means are to be provided to facilitate a smooth transfer of command between workstations.

PT 5, Ch 7, 5.3 Controllable pitch propellers (CPP) and transverse thrust units, section 5.3.2 states that the CPP units for main propulsion of the vessel should be provided with an alternative power source for controlling the pitch of the propeller blades. Section 5.3.4 and 5.3.5 state that transverse thrust units need to be provided with emergency stops at all remote-control stations, the direction and magnitude of thrust and pitch need to be displayed at all control stations.