🔍 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.