Exam Question
Describe an electric telegraph system and describe its operation. (16)
Class 4 (4th Engineer)
MET
📅 Aug 2023
Reference Answer
### **1. Concept and Purpose**
The ship's Engine Order Telegraph (EOT), also known as a Chadburn, is a critical communication system for transmitting propulsion orders from the navigation bridge to the Engine Control Room (ECR) and the local manoeuvring station. Its primary function is to convey the Officer of the Watch's desired engine speed and direction (Ahead or Astern) to the watchkeeping engineer in a clear, unambiguous, and logged manner.
The system is designed as a closed-loop communication link, requiring a positive acknowledgement from the engine room for every order given, ensuring the order has been correctly received before execution.
### **2. Construction and Components**
The ship's Engine Order Telegraph (EOT), also known as a Chadburn, is a critical communication system for transmitting propulsion orders from the navigation bridge to the Engine Control Room (ECR) and the local manoeuvring station. Its primary function is to convey the Officer of the Watch's desired engine speed and direction (Ahead or Astern) to the watchkeeping engineer in a clear, unambiguous, and logged manner.
The system is designed as a closed-loop communication link, requiring a positive acknowledgement from the engine room for every order given, ensuring the order has been correctly received before execution.
### **2. Construction and Components**
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