A vessel loses Inmarsat-FBB SES operation...

Question 1 / 27070Ja3Iyvf3sNxWjtHQdJsI

Question 1 of 27070Ja3Iyvf3sNxWjtHQdJsI

A vessel loses Inmarsat-FBB SES operation after a large course change. Which of the following could most likely cause this?

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Question 1 of 27070

A vessel loses Inmarsat-FBB SES operation after a large course change. Which of the following could most likely cause this?

🔍 Key Concepts

• Inmarsat-FBB (FleetBroadband) uses geostationary satellites fixed over the equator • How ship’s structure and orientation can block or attenuate satellite line-of-sight • Difference between temporary obstructions (like weather) and solid, permanent obstructions (like masts/superstructure)

💭 Think About

• After a large course change, what has changed in relation to the satellite: the ship’s position, or the direction the ship is pointing? • Which of the listed options would create an immediate loss of signal right after altering course, without the ship having traveled hundreds of miles? • Which types of objects most strongly block high‑frequency satellite signals: clouds/weather or solid metal structures?

✅ Before You Answer

• Confirm that geostationary satellites stay fixed relative to the Earth’s surface, so coverage footprint doesn’t suddenly change after a turn. • Think about whether clouds/weather normally cause complete loss of Inmarsat service or mainly reduce quality. • Visualize the line-of-sight path from the SES antenna to the satellite and how turning the vessel could bring masts/superstructure directly into that path.

Question 1 of 27070

A vessel loses Inmarsat-FBB SES operation after a large course change. Which of the following could most likely cause this?

Shadowing of the SES antenna by clouds or other weather formations.

Misalignment of the shadow correction filter.

The vessel sailed beyond the footprint of the satellite coverage.

The ship ’s superstructure is now blocking the satellite signal .

Question 1 / 27070Ja3Iyvf3sNxWjtHQdJsI

Question 1 of 27070Ja3Iyvf3sNxWjtHQdJsI

A vessel loses Inmarsat-FBB SES operation after a large course change. Which of the following could most likely cause this?

Back

Question 1 of 27070

A vessel loses Inmarsat-FBB SES operation after a large course change. Which of the following could most likely cause this?