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

Where are the permitted working radio telephony frequencies for ship-to-ship communication in the MF band (medium distance) specified?

A In Radio Regulations, Volume 1, Chapter IX - Maritime services, Article 52 - special rules relating to use of the frequencies

B In publication List of Ship Stations

C In publication Admiralty List of Radio Signals Volume 1

D In publication List of Coast Stations

Question 2

What international frequency is used for transmitting maritime safety information by the NAVTEX service?

A 518kHz

B 490kHz

C 4209.5kHz

D 2182kHz

Question 3

When conducting radio communication using radiotelex, there's an exchange of answerbacks between participants to ensure correct subscriber. What does the letter X at the end of the answerback mean?

A It means that the station is a marine mobile station

B It means that the station is a coast station

C It means that the equipment at the station is malfunctioning

D It means that the equipment at the station is unrecognized

Question 4

In sea area A3 you rcvd DSC Distress alert fm another vsl in VHF range. Vsl is not responding to your attempts to ack. Distress alert on VHF ch.16 & DSC Distress alerts continue.What are your actions?

A Acknowledge the distress alert to the vessel in distress on VHF channel 70 - 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 VHF channel 70

C Acknowledge the distress alert to the vessel in distress on 2187.5kHz - send DSC Distress relay on international emergency HF DSC frequencies to a specific coast station

D Acknowledge the distress alert to the vessel in distress on 8414.5kHz - send DSC Distress relay on 12577kHz to a specific coast station

Question 5

How many NAVAREA/METAREA regions exist?

A 21

B 16

C 24

D 12

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