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OICNW-3-1C

Identify false echoes, sea return, racons and SARTs

Function: Navigation at the operational level

Competence Knowledge, Understanding & Proficiency Task

Use of radar and ARPA to maintain safety of navigation

A3.2 Ability to operate and to interpret and analyse information obtained from radar, including the following:

Performance, including:

  1. factors affecting performance and accuracy
  2. setting up and maintaining displays
  3. detection of misrepresentation of information, false echoes, sea return, etc., racons and SARTs

Use, including:

  1. range and bearing; course and speed of other ships; time and distance of closest approach of crossing, meeting overtaking ships
  2. identification of critical echoes; detecting course and speed changes of other ships; effect of changes in own ship’s course or speed or both
  3. application of the International Regulations for Preventing Collisions at Sea, 1972, as amended
  4. plotting techniques and relative- and true- motion concepts
  5. parallel indexing

Identify false echoes, sea return, racons and SARTs

Assessed in: MT-3122 Radar Observer Certification

Condition

On an operational radar or radar simulator that meets the standards of 33 CFR 164.38 and other applicable national and international performance standards.

Behavior

Identify false echoes, sea return, a racon and SART.

Standard

The following were recognized and correctly identified:

  1. False echoes:
    1. Indirect echoes
    2. Multiple echoes
    3. Electronic interference
    4. Spoking
  2. Sea return;
  3. Racons; and,
  4. SARTs.