🔍 Key Concepts

• GMDSS (Global Maritime Distress and Safety System) design philosophy within one sea area • Difference between redundancy of equipment vs. redundancy of capability • Purpose of using multiple, diverse communication paths (e.g., satellite, VHF, MF/HF)

💭 Think About

• Ask yourself: Is GMDSS more focused on having exact duplicate radios, or on ensuring that key distress functions can still be performed if one system fails? • Consider why a ship in one sea area might still use more than one type of communication system—what risk is being reduced? • Which option talks about the combined effect of several systems rather than just obeying a national rule or matching every possible mode?

✅ Before You Answer

• Identify which choices talk about full duplication of all functions versus backing up essential capabilities only. • Check which option clearly addresses the problem of a single point of failure in distress alerting and communication. • Eliminate answers that focus mainly on national regulations or being able to use every mode with every station, rather than on overall system reliability and survivability.