ETO Navigation Electronics & GMDSS 2

Question 1

What does AIS stand for in the context of marine navigation equipment?

Accepted Answer

Automatic Identification System

Answer

Automated Identification System

Answer

Automatic Information System

Answer

Automated Integrated System

Question 2

On which VHF channels does Class A AIS operate for its transmissions?

Accepted Answer

Channels 87B (161.975 MHz) and 88B (162.025 MHz)

Answer

Channels 13 and 16

Answer

Channels 70 and 77

Answer

Channels 16 and 22A

Question 3

Which radar frequency band provides the best target resolution for close-range navigation in congested waters?

Accepted Answer

X-band (9-10 GHz)

Answer

S-band (2-4 GHz)

Answer

L-band (1-2 GHz)

Answer

C-band (4-8 GHz)

Question 4

What is the primary function of ECDIS aboard a vessel?

Accepted Answer

Electronic Chart Display and Information System used as an approved navigation system

Answer

Emergency Communication and Distress Information System for GMDSS

Answer

Electronic Course and Distance Indicator System for autopilot

Answer

Engine Control and Display Information System for propulsion monitoring

Question 5

What does the ARPA CPA/TCPA alarm warn the officer of the watch about?

Accepted Answer

A tracked target whose closest point of approach or time to CPA falls below preset alarm thresholds

Answer

A radar contact that has disappeared from the screen

Answer

A malfunction in the ARPA processor unit

Answer

An AIS target that is not correlated with a radar echo

Question 6

Which data must be manually entered into a Class A AIS transponder by the bridge crew?

Accepted Answer

Destination, ETA, draught, and other voyage-related data

Answer

Speed over ground and course over ground

Answer

GPS position fix

Answer

Wind speed and direction

Question 7

What does ARPA stand for as fitted on modern navigational radar systems?

Accepted Answer

Automatic Radar Plotting Aid

Answer

Advanced Radar Position Analysis

Answer

Automated Route Planning Algorithm

Answer

Automatic Route and Position Aid