The vessel to which you are assigned is...

Question 1 / 2066636eef28f7522a1c51ffb2

Question 1 of 2066636eef28f7522a1c51ffb2

The vessel to which you are assigned is fitted with a totally pneumatic propulsion control system as shown in the illustration. If propulsion control functions perfectly from the engine room control station, but will not function at all from any of the remote stations, which of the following system faults best accounts for these symptoms? Illustration MO-0168

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🔍 Key Concepts

• Trace the air supply path from each remote station (pilot house and pneumatic remote) back to the engine room control station on the diagram. • Notice how the local/remote transfer valve in the engine room decides whether the clutch and speed controls respond to local levers or to any remote levers. • Think about which single fault could stop all remote stations from working while still allowing full control locally in the engine room.

💭 Think About

• On the schematic, when a remote station is in control, which port of the engine room local/remote transfer valve must be open for remote pilot air to reach the clutch and speed control panel? • If only one attendance valve or one pilot-house transfer valve were blocked, would that failure affect every remote station or just one of them? • If the local port of the ER transfer valve were blocked, what would happen when you try to control the plant from the engine room itself? Compare that with the symptoms in the question.

✅ Before You Answer

• Identify the one component common to all remote stations just before the signals enter the clutch control panel. • Verify which port of that component is labeled for remote pilot air and which is for local pilot air. • Match the described symptom: local control OK, all remotes dead with which port (local vs remote) being blocked would realistically produce that situation.

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Question 1 of 20

The attendance valve at the pneumatic remote-control station has a blocked outlet port.

The local/remote transfer valve at the engine room control station has a blocked local port.

The pilot house/remote transfer valve at the pilot house has a blocked remote port.

The local/remote transfer valve at the engine room control station has a blocked remote port.

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Question 1 / 2066636eef28f7522a1c51ffb2

Question 1 of 2066636eef28f7522a1c51ffb2

Back

Question 1 of 20

66636eef28f7522a1c51ffb2

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If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

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