🔍 Key Concepts

• Trace the air supply paths from the clutch air receiver through the engine room control station and up to the pilot house stations. • Note what each transfer valve label/position actually routes: engine room vs pilot house; pilot house vs pneumatic remote. • Focus on how the mechanical slave remote control station is drawn: does it use pneumatic air, or does it bypass the pneumatic master station?

💭 Think About

• When using the mechanical slave remote control, which station actually sends the working signal to the governor and clutch—engine room pneumatic controls, pilot house pneumatic master, or a mechanical linkage? • If the mechanical slave takes over control, should the pilot house pneumatic master still be in the control circuit, or should it be bypassed by the way the transfer valves are set? • Look at the arrows showing ‘Supply Air to Pilot House’ and ‘Supply Air to Remote Station’: in mechanical slave mode, which of these air feeds must be active and which should be isolated?

✅ Before You Answer

• Verify which transfer valve position at the engine room control station sends air up to the pilot house versus keeping control in the engine room. • Verify which position of the pilot house pneumatic master transfer valve connects the air lines to the pneumatic controls versus leaving them isolated for mechanical control. • Confirm whether the mechanical slave remote relies on pneumatic pilot air from the master control or operates independently; choose the option that correctly leaves the unused control path isolated.