🔍 Key Concepts

• Line-of-sight propagation for marine antennas (radar, VHF, GPS, etc.) • How superstructure, masts, and funnels can block or shadow signals • Trade-offs between height, cable length, access, and clear all‑round radiation

💭 Think About

• Which option directly affects whether the antenna can "see" the horizon and all directions around the vessel? • If an antenna is blocked in one direction, what practical problems might that cause for radar or VHF communications? • Among the four choices, which one most affects the reliability and safety of your navigation/communications rather than just convenience or efficiency?

✅ Before You Answer

• Identify which answer choice best ensures unobstructed coverage around the vessel • Ask: which factor would a surveyor or inspector be most concerned with for safe operation, not just ease of installation? • Consider that some factors (like cable length or access) are helpful, but only after the primary safety and performance requirement is satisfied