ETO Navigation Electronics & GMDSS 3

Question 1

What is the international MF distress and calling frequency for voice communications?

Accepted Answer

2182 kHz

Answer

500 kHz

Answer

4125 kHz

Answer

8291 kHz

Question 2

What is the primary purpose of two-way portable VHF radios carried as survival craft equipment under GMDSS?

Accepted Answer

To provide on-scene voice communication between survival craft and rescue units

Answer

To serve as the primary distress communication system for the ship

Answer

To maintain contact with port VTS during port approach

Answer

To replace the main VHF installation during scheduled maintenance

Question 3

What is the correct format for a ship station MMSI number?

Accepted Answer

9-digit number whose first three digits are the Maritime Identification Digits (MID) representing the country

Answer

9-digit number beginning with 00

Answer

7-digit number assigned directly by the ITU

Answer

12-digit number incorporating the vessel radio call sign

Question 4

For a vessel operating in GMDSS Sea Area A3, which additional equipment beyond A1/A2 requirements is mandatory?

Accepted Answer

An INMARSAT ship earth station or equivalent satellite communication system

Answer

A second VHF DSC radio

Answer

A second NAVTEX receiver

Answer

A high-power MF/HF DSC radio only

Question 5

Under GMDSS regulations, how must the DSC watch on VHF Channel 70 be maintained while a vessel is at sea?

Accepted Answer

Continuously, 24 hours per day

Answer

During daylight hours only (0600-2200 local time)

Answer

Only when the vessel is underway in designated traffic lanes

Answer

Only during port approach and departure phases

Question 6

What type of communication does Inmarsat-C provide aboard a GMDSS-equipped vessel?

Accepted Answer

Two-way store-and-forward digital messaging and automatic distress alerting via satellite

Answer

Real-time voice calls via geostationary satellite

Answer

High-speed broadband internet for crew welfare

Answer

Real-time video conferencing with maritime rescue coordination centers

Question 7

Which document is an ETO required to maintain that records all radio communications, distress traffic, and daily equipment test results?

Accepted Answer

Ship's Radio Log (Radio Journal)

Answer

Engine Room Log Book

Answer

Official Log Book

Answer

Safety Management Certificate