OICNW Task 3.3.A

Identify false echoes, sea return, racon and SART

MMA Method

In order to satisfy NVIC 12-14 Task 3.3.A , MMA students must:

NVIC Method

See NVIC method.

STCW Competence Knowledge, Understanding, and Proficiency

Use of radar and ARPA to maintain safety of navigation

OICNW-A3.2 Radar navigation

Ability to operate and to interpret and analyze information obtained from radar, including detection of misrepresentation of information, false echoes, sea return, etc., racons and SARTs
Condition Behavior Standard

On a vessel or on a radar simulator that meets the standards of 33 CFR 164.38 and other applicable national and international performance standards,

the candidate identifies false echoes, sea return, a racon, and SARTs.

The candidate recognizes and correctly identifies:

  1. False echoes:

    a. Indirect or false echoes;

    b. Side-lobe effects;

    c. Multiple echoes;

    d. Second-trace echoes;

    e. Electronic interference; and

    f. Spoking;

  2. Sea return;

  3. Racons; and

  4. SARTs.