*Question E1A10:
[97.11] If an amateur station is installed aboard a ship or aircraft, what condition must be met before the station is operated?*  

*Correct Answer is  A: Its operation must be approved by the master of the ship or the pilot in command of the aircraft*  

### AI Response: (may contain errors)  

To operate an amateur station aboard a ship or aircraft, the correct condition that must be met is:

**Correct Answer: A: Its operation must be approved by the master of the ship or the pilot in command of the aircraft.**

### Explanation of the Correct Answer:
- **Authority and Safety**: The master of the ship or the pilot in command has the ultimate authority over the vessel or aircraft. Their approval ensures that the amateur station does not interfere with essential navigation and communication systems. This is crucial for safety and operational integrity.

### Explanation of Incorrect Answers:
- **B: The amateur station operator must agree not to transmit when the main radio of the ship or aircraft is in use**  
  - While it is good practice to avoid interference, this is not a formal requirement. The primary condition is obtaining approval from the master or pilot.

- **C: The amateur station must have a power supply that is completely independent of the main ship or aircraft power supply**  
  - This is not a requirement. Amateur stations can use the ship or aircraft's power supply as long as they comply with regulations and do not interfere with critical systems.

- **D: The amateur station must operate only in specific segments of the amateur service HF and VHF bands**  
  - While there are band plans and regulations for amateur radio operation, this statement does not address the specific requirement for operation aboard a ship or aircraft. The key requirement is the approval from the master or pilot.

### Summary:
- Always seek approval from the master or pilot before operating an amateur station on a ship or aircraft to ensure safety and compliance with regulations.