🔍 Key Concepts

• AIS SART vs Radar SART – what each system is designed to do and how they are detected • The typical range and detection characteristics of AIS VHF signals versus radar signals • The meaning of GPS accuracy and data reliability in distress locating equipment

💭 Think About

• Which of these options sounds like a clear benefit that would reasonably be advertised as a selling point of AIS SART over radar SART? • Is there any statement that seems exaggerated or unlikely when you compare typical VHF/AIS performance with radar performance? • How do GPS-based position reporting and digital AIS messages normally affect accuracy and the ability to track a distress target?

✅ Before You Answer

• Identify which options clearly describe realistic advantages you’ve heard about AIS SART (accuracy, tracking, performance in clutter). • Ask yourself if AIS on VHF frequencies can always be detected "much farther" than radar – does that match your understanding of radio vs radar limitations? • Confirm that the "odd one out" is the choice that seems least technically credible as a consistent advantage of AIS SART over radar SART.