Which speed should be adopted for collision avoidance while using ARPA?

• SOG

• STW

• Speed Log

• Speed tracking

What does PPCs (Predicted Point of Collision) mean?

• The point/s toward which the own ship should steer at her present speed (assuming that the target does not maneuver) in order for a collision to occur.

• The point/s toward which the own ship should steer at her present course (assuming that the target does not maneuver) in order for a collision to occur.

• The point/s toward which the own ship should not steer at her present speed (assuming that the target does not maneuver) in order for a collision to occur.

• The point/s toward which the own ship should steer at her present position (assuming that the target does nkt maneuver) in order for a collision to occur.

What does PAD (Predicted Areas of Danger) mean?

• It is the possible collision areas of the own ship with the target under the condition of the target to adjust her speed and course and the own ship keeping the speed.

• It is the possible collision areas of the own ship with the target under the condition of the target keeping the speed and adjust her course and the own ship keeping the speed.

• It is the possible collision areas of the own ship with the target under the condition of the target keeping the speed and course and the own ship keeping the speed.

• It is the possible collision areas of the own ship with the target under the condition of the target keeping the speed and course and the own ship adjusting the speed.

What is the importance of Relative Vectors?

• It helps to make collision avoidance decisions.

• It helps to assess the risk of collision.

• It helps to predict the target’s past track.

• It helps to switch over the target’s vectors.

What is the importance of True Vectors?

• It helps to make collision avoidance decisions.

• It helps to assess the risk of collision.

• It helps to predict the target’s past track.

• It helps to switch over the target’s vectors.

What are some ways incorrect vector data can affect radar observations for an OOW (Officer of the Watch)?

• Enhance the accuracy of vessel positioning.

• Provide reliable collision warnings.

• Result in inaccurate target locations and collision predictions.

• Improve navigational decisions.

What is a common error associated with vector presentation on radar displays?

• Accurate target tracking.

• Consistent collision avoidance.

• Misinterpretation of target speed and direction.

• Reliable navigational mapping.

What can result if vectors are not properly aligned with the target's actual movement?

• Accurate collision predictions.

• Incorrect estimation of target's course and speed.

• Enhanced target tracking.

• Reliable navigational information.

What is a relative motion vector in radar observation?

• A dynamic depiction of the target's movement relative to the own ship.

• A stationary point of reference for radar calibration.

• A visual representation of fixed objects in the radar's vicinity.

• A map overlay showing geographical landmarks.

  
  

What is a true motion vector in radar observation?

• A fixed representation of geographical coordinates.

• A static depiction of a vessel's position on the radar display.

• A dynamic representation of the target's actual movement through the water.

• A visual aid indicating magnetic north on the radar screen.