RADAR, Fitur EBL VRM bantu Penentuan Posisi Kapal (PENPOS KAPAL)

Introduction

This tutorial will guide you through using the RADAR system's EBL (Electronic Bearing Line) and VRM (Variable Range Marker) features to accurately determine a vessel's position. This method enhances the reliability of position determination, complementing GPS usage by providing additional reference points for navigation.

Step 1: Understanding EBL and VRM

• EBL (Electronic Bearing Line): This is a straight line drawn on the radar display that indicates the bearing to a target.
• VRM (Variable Range Marker): This allows you to measure the distance from the radar to a specific point, providing a way to gauge how far away a target is.

Practical Tips

• Familiarize yourself with your radar interface to locate the EBL and VRM options.
• Use EBL to track the direction of other vessels or landmarks, while VRM helps in estimating distances.

Step 2: Setting Up EBL

1. Activate the EBL Feature:
   • Navigate to your radar's settings.
   • Select the EBL option to display the line on your radar screen.
2. Position the EBL:
   • Point the EBL towards your target (e.g., another vessel, a buoy, or land).
   • Ensure the EBL is correctly aligned with the target for accurate bearing information.

Common Pitfalls

• Misalignment of the EBL can lead to incorrect bearing readings. Double-check the orientation before proceeding.

Step 3: Using VRM for Distance Measurement

1. Activate the VRM Feature:
   • Access the VRM settings in your radar interface.
   • Enable the VRM display on your radar screen.
2. Measure the Distance:
   • Position the VRM marker at the point of interest (e.g., another vessel).
   • Read the distance indicated by the VRM to understand how far away the target is.

Real-World Application

• Use the VRM to safely navigate and maintain a safe distance from other vessels, especially in crowded waters.

Step 4: Cross-Referencing Position with GPS

• Once you've determined the bearing and distance using EBL and VRM:
  1. Check GPS Coordinates:
     • Compare your findings with the GPS position.
  2. Adjust Navigation:
     • If discrepancies exist, adjust your course as necessary to ensure accurate positioning.

Practical Advice

• Regularly cross-reference radar data with GPS to build confidence in your navigation skills and to enhance safety at sea.

Conclusion

By effectively using the EBL and VRM functions on your RADAR, you can significantly improve your vessel's positioning accuracy. This method serves as a valuable backup to GPS, ensuring safer navigation. As you practice these techniques, you'll become more adept at interpreting radar data, which is essential for any mariner. Next, consider exploring additional radar features to further enhance your navigation skills.