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OICNW-3-2I

Establish alarm area

Function: Navigation at the operational level

Competence Knowledge, Understanding & Proficiency Task

Use of radar and ARPA to maintain safety of navigation

A3.4 Ability to operate and to interpret and analyze information obtained from ARPA, including:

  1. system performance and accuracy, tracking capabilities and limitations, and processing delays
  2. use of operational warnings and system tests
  3. methods of target acquisition and their limitations
  4. true and relative vectors, graphic representation of target information and danger areas
  5. deriving and analysing information, critical echoes, exclusion areas and trial manoeuvres

Establish alarm area

Assessed in: MT-3222 Automatic Radar Plotting Aids

Condition

On an operational ARPA that meet the standards of 33 CFR 164.38 (or an ARPA simulator that meets applicable national and international performance standards for ARPA), with the ARPA on the 12 mile scale.

Behavior

Establish an alarm area with outer and inner guard rings.

Standard

Establish an alarm area with an outer guard ring of 8 nm and an inner guard ring of 4nm within 2 minutes.