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

What does the abbreviation LEOSAR stand for?

A Low Earth Orbit Search and Rescue

B Lower Oriental Search and Rescue

C Low Earth Orient Search and Rescue

D Light Earth Orbit Search and Rescue

Question 2

Where can I find a list of commands for operating the coast station in automatic mode using a radiotelex?

A In publication Admiralty List of Radio Signals volume 1 and in Radio Regulations Volume 4, recommendation М.492-6

B In publication Admiralty List of Radio Signals Volume 1

C In Radio Regulations Volume 4, recommendation М.492-6

D In publication Admiralty List of Radio Signals Volume 6

Question 3

What is semi-duplex communication?

A This is a method of simplex communication at one end of the radio line and duplex communication at the other end of the radio line. It requires the use of two frequencies

B This is a communication that is made on a single frequency. Transmission is possible alternately in each of the two communication directions

C This is a communication that is made on two frequencies. Transmission is possible simultaneously in both directions of the radio communication channel

D This is a method of simplex communication at one end of the radio link and duplex communication at the other end of the radio link. It requires the use of a single frequency

Question 4

For DSC addressed to ships in a given geographic area, the AREA CALL format is used. What is used as the address?

A The address is formed based on the coordinates of a rectangle with a reference point located at its NE corner. Then, increments are set to the south and to the east of this point

B A Maritime Mobile Service Identity assigned to the called station is used

C Call sign of the called station is used

D Official registration number of the called station is used

Question 5

What is DSC?

A This is a type of radio communication that uses digital codes

B This is a type of radio communication intended for transmitting speech or other sounds

C This is a type of radio communication that uses automatic letter-printing telegraph equipment with improved reception fidelity

D This is a type of radio communication using artificial radio wave relays (space satellites)

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