NVIC 12-14 Task 3.3.A

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

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.