Bridge Navigation & Deck Operations

GMDSS – General Knowledge

This test evaluates your knowledge of the Global Maritime Distress and Safety System . It covers key equipment, functions, and procedures for maritime communication and emergency response, ensuring compliance with international safety standards.

Questions 16

Time Limit 9 min

Language English

Sample Questions

Here are some example questions from this quiz. Download the GYRO app to take the full test.

Question 1

You sent DSC Safety call to all stations and must transmit a safety message on working channel. What form should such a message take?

A SECURITE x3 times - ALL STATIONS x3 times - "This is" vessel's name x3 times - vessel's call sign/MMSI. Then transmit the safety message

B SECURITE x3 times - Station name x3 times - "This is" vessel's name x3 times - vessel's call sign/MMSI. Then transmit the safety message

C SECURITE x3 times - ALL STATIONS - Station name x3 times - "This is" vessel's name x3 times - vessel's call sign/MMSI. Then transmit the safety message

D ALL STATIONS x3 times - "This is" vessel's name x3 times - vessel's call sign/MMSI. Then transmit the safety message

Question 2

How often is the publication LIST OF COAST STATIONS AND SPECIAL SERVICE STATIONS (LIST IV) reissued?

A Every two years, each successive edition cancels all previous ones

B Every two years, each subsequent edition does not cancel but only complements all previous ones

C Annually, each subsequent edition cancels all previous ones

D Annually, each subsequent edition does not cancel but only supplements all previous ones

Question 3

What is used as an identifier for the coast station when operating in radiotelex mode?

A Four-digit selective call number or MMSI

B Five-digit selective call number or MMSI

C The telex country code of the country where the coast station is located

D Call sign of coast station

Question 4

Your vessel is in sea area A3. You have received a DSC Distress alert from another vessel in VHF range. What are your actions?

A Acknowledge the distress alert to the vessel in distress on VHF channel 16 - send DSC Distress relay on international emergency HF DSC frequencies to a specific coast station

B Acknowledge the distress alert to the vessel in distress on 8291kHz - send DSC Distress relay on 8414.5kHz to the specific coast station

C Acknowledge the distress alert to the vessel in distress on 8291kHz - send DSC Distress relay on 8414.5kHz to all stations

D Wait for DSC Distress ack. fm coast station - switch to VHF ch.16 and listen for emergency radio communication - acknowledge the distress alert to the vessel in distress on VHF ch.16

Question 5

What is the minimum composition of radio equipment for Sea area A3?

A All radio equipment that is required for the Sea areas A1 and A2 and Ship earth station INMARSAT C or MF/HF radio installation with DSC and NBDP

B MF/HF radio installation with DSC and NBDP

C Ship earth station INMARSAT C

D All radio equipment that is required for the Sea area A2 and Ship earth station INMARSAT C

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