Which of the following would indicate an...

Question 1 / 270700qVLb0beaFhChVEuys8M

Question 1 of 270700qVLb0beaFhChVEuys8M

Which of the following would indicate an Inmarsat-C terminal?

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Question 1 of 27070

Q

Which of the following would indicate an Inmarsat-C terminal?

🔍 Key Concepts

• Structure of Inmarsat Mobile Numbers (IMN) • How Inmarsat-C numbers are identified by their leading digit(s) • Difference between Inmarsat-C IDs and MMSI (Maritime Mobile Service Identity) numbers

💭 Think About

• Look at the first digit of each 9‑digit number and recall which leading digit is assigned to Inmarsat‑C services. • Ask yourself: which of these looks like an Inmarsat mobile number (IMN) rather than a ship’s MMSI? • Think about how Inmarsat distinguishes between voice services (A/B/M) and data-only services like Inmarsat‑C using different starting digits.

✅ Before You Answer

• Confirm that Inmarsat‑C terminals use a specific leading digit in their 9‑digit Inmarsat Mobile Number. • Verify that an MMSI for a U.S. vessel typically starts with 366, 367, or 368, so eliminate anything that clearly looks like an MMSI. • From the remaining options, select the number whose first digit matches the Inmarsat‑C service code you’ve memorized.

Question 1 of 27070

Q

Which of the following would indicate an Inmarsat-C terminal?

A

600935021

B

366294824

C

764881432

D

430346275

Question 1 / 270700qVLb0beaFhChVEuys8M

Question 1 of 270700qVLb0beaFhChVEuys8M

Which of the following would indicate an Inmarsat-C terminal?

Back

Question 1 of 27070

Q

Which of the following would indicate an Inmarsat-C terminal?

🔍 Key Concepts

• Structure of Inmarsat Mobile Numbers (IMN) • How Inmarsat-C numbers are identified by their leading digit(s) • Difference between Inmarsat-C IDs and MMSI (Maritime Mobile Service Identity) numbers

💭 Think About

• Look at the first digit of each 9‑digit number and recall which leading digit is assigned to Inmarsat‑C services. • Ask yourself: which of these looks like an Inmarsat mobile number (IMN) rather than a ship’s MMSI? • Think about how Inmarsat distinguishes between voice services (A/B/M) and data-only services like Inmarsat‑C using different starting digits.

✅ Before You Answer

• Confirm that Inmarsat‑C terminals use a specific leading digit in their 9‑digit Inmarsat Mobile Number. • Verify that an MMSI for a U.S. vessel typically starts with 366, 367, or 368, so eliminate anything that clearly looks like an MMSI. • From the remaining options, select the number whose first digit matches the Inmarsat‑C service code you’ve memorized.