Which statement is correct regarding HF...

Question 1 / 27070ccBbDnS7xi3ajIhOYK8F

Question 1 of 27070ccBbDnS7xi3ajIhOYK8F

Which statement is correct regarding HF SITOR (NBDP) under GMDSS?

Question 1 of 27070

Which statement is correct regarding HF SITOR (NBDP) under GMDSS?

🔍 Key Concepts

• GMDSS distress, urgency, and safety priorities and how they are sent on HF • The difference between ARQ (Automatic Repeat reQuest) and FEC (Forward Error Correction) in SITOR/NBDP • When you would use broadcast versus two‑way (point‑to‑point) modes for distress and safety messages

💭 Think About

• For a distress or safety message that needs to reach many ships and coast stations at once, which type of mode (ARQ or FEC / SSB voice or print) is better suited for broadcasting? • When communicating directly with a single coast station (like the U.S. Coast Guard) on a known working channel, which mode supports acknowledged, error‑checked two‑way telegraphy? • Look carefully at the answers that forbid switching modes; does GMDSS generally restrict you from using a more effective mode after initial contact if conditions change?

✅ Before You Answer

• Identify which option correctly matches ARQ with two‑way, acknowledged telegraphy and which matches FEC/SSB with broadcast use. • Check which choices incorrectly limit your ability to change from FEC to ARQ when it would improve communication. • Verify which answer clearly supports the GMDSS goal of maximum reliability and widest possible reception for distress/safety messages not going only to one coast station.

Question 1 of 27070

Which statement is correct regarding HF SITOR (NBDP) under GMDSS?

Distress communications other than directly to the Coast Guard or other coast stations on the channels that they normally guard, should be in the broadcast SSB mode.

Safety communications by direct - printing telegraphy should be in the ARQ mode when communicating with the U.S. Coast Guard or other coast stations on channels that they normally guard.

The ARQ mode may not be used subsequently to the FEC mode even when it is advantageous to do so.

Distress communications other than directly to the Coast Guard or other coast stations on the channels that they normally guard, should be in the broadcast FEC or SSB mode.

Question 1 / 27070ccBbDnS7xi3ajIhOYK8F

Question 1 of 27070ccBbDnS7xi3ajIhOYK8F

Which statement is correct regarding HF SITOR (NBDP) under GMDSS?

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Question 1 of 27070

Which statement is correct regarding HF SITOR (NBDP) under GMDSS?