🔍 Key Concepts

• Bearing resolution on marine radar (what it means and how it’s measured) • Effect of antenna beamwidth on being able to separate two close targets • Difference between horizontal and vertical beam shape and what each one affects (bearing vs. range/sea clutter/height)

💭 Think About

• When trying to distinguish two targets that are very close together side‑by‑side, what radar characteristic helps you tell that there are actually two separate bearings? • Does bearing resolution depend more on how the beam spreads left‑to‑right (azimuth) or up‑and‑down (elevation)? • Which of the listed options directly affects how finely you can tell the direction of a contact, rather than its strength or how often it’s transmitted?

✅ Before You Answer

• Identify which option describes the beam shape in azimuth (horizontal) rather than vertical. • Eliminate any options that mainly affect power or transmit time instead of direction‑finding accuracy. • Confirm that the remaining choice clearly improves the ability to see two distinct targets on slightly different bearings.