If a vessel is within range of NAVTEX...

Question 1 / 20kjBm6sgcdSP5Qfl4HXAK

Question 1 of 20kjBm6sgcdSP5Qfl4HXAK

If a vessel is within range of NAVTEX broadcasts and both the Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator should:

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Question 1 of 20

kjBm6sgcdSP5Qfl4HXAK

If a vessel is within range of NAVTEX broadcasts and both the Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator should:

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🔍 Key Concepts

• Maritime Safety Information (MSI) and how it is delivered under GMDSS • The specific use of NAVTEX (518 kHz) versus MF/HF NBDP (narrow-band direct printing) for MSI • Difference between FEC (Forward Error Correction) and ARQ modes for receiving broadcasts

💭 Think About

• Think about whether MSI broadcasts are one-way or two-way, and which mode (FEC or ARQ) is designed for that type of traffic. • Ask yourself: when NAVTEX and Inmarsat-C are unavailable, which remaining GMDSS equipment and mode is intended to receive broadcast MSI on MF/HF? • Consider which frequencies and modes are standard for international MSI broadcasts versus ship-to-shore addressed messages.

✅ Before You Answer

• Verify which mode, FEC or ARQ, is used for broadcast NBDP messages that do not require a return channel from the ship. • Check which MF frequency band is associated with NAVTEX-equivalent MSI when using MF/HF instead of NAVTEX/Inmarsat-C. • Confirm that waiting for repairs without using available MF/HF MSI options does not meet the intent of GMDSS for redundancy.

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Question 1 of 20

If a vessel is within range of NAVTEX broadcasts and both the Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator should:

Select 518 kHz FEC TELEX on the MF/HF console to receive MSI.

Select 518 kHz ARQ TELEX on the MF/HF console to receive MSI.

Request repairs of the Sat-C system and wait until within range of NAVTEX.

Select an HF MSI frequency and ARQ TELEX mode to receive MSI.

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Question 1 / 20kjBm6sgcdSP5Qfl4HXAK

Question 1 of 20kjBm6sgcdSP5Qfl4HXAK

If a vessel is within range of NAVTEX broadcasts and both the Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator should:

Back

Question 1 of 20

kjBm6sgcdSP5Qfl4HXAK

If a vessel is within range of NAVTEX broadcasts and both the Inmarsat-C and the NAVTEX receiver are inoperative the GMDSS operator should:

No comments yet

Be the first to share your thoughts!

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?

Quick actions

— No credit card needed