🔍 Key Concepts

• Differences between Inmarsat-FBB (FleetBroadband) and Inmarsat-C services (data type, speed, typical uses) • Typical antenna size and type used with Inmarsat-FBB vs Inmarsat-C (parabolic vs non-parabolic, active vs passive) • What rewind capability (cable/antenna stabilization) is used for on certain stabilized shipboard antennas

💭 Think About

• Think about which system (FBB or C) is used for high-speed IP data and voice, and which is for low-speed messaging. Which one would normally need a larger, stabilized dish? • Consider which type of antenna (parabolic dish vs small omnidirectional) would need mechanical stabilization and "rewind" when the ship turns a lot. • For each option, ask yourself: does that service really match that antenna size/type in real life installations you’ve seen or studied?

✅ Before You Answer

• Verify which system, Inmarsat-FBB or Inmarsat-C, typically uses a stabilized parabolic dish on merchant ships. • Verify which system typically uses a small, simple omnidirectional / non-parabolic antenna that doesn’t need mechanical tracking or rewind. • Check that the option you pick consistently matches: service type ↔ antenna size ↔ parabolic vs non-parabolic ↔ need for rewind capability.