RYA SRC DSC Operations

Question 1

What does 'DSC' stand for in marine radio communications?

Accepted Answer

Digital Selective Calling

Answer

Direct Safety Communication

Answer

Distress Signal Channel

Answer

Digital Ship Control

Question 2

On which VHF channel are DSC calls transmitted?

Accepted Answer

Channel 70

Answer

Channel 16

Answer

Channel 6

Answer

Channel 13

Question 3

What is an MMSI number and why is it important for DSC?

Accepted Answer

A unique nine-digit Maritime Mobile Service Identity that identifies a specific vessel or coast station in the DSC system

Answer

A type of radio antenna

Answer

A weather code

Answer

A frequency designation

Question 4

What happens when you press the dedicated 'DISTRESS' button on a DSC VHF radio?

Accepted Answer

It sends an automated distress alert on Channel 70 containing your MMSI, position, and nature of distress to all DSC-equipped stations

Answer

It turns the radio off

Answer

It calls the police

Answer

It switches to Channel 16 only

Question 5

After sending a DSC distress alert, what should the operator do next?

Accepted Answer

Switch to Channel 16 and broadcast a Mayday voice message to provide full details of the distress

Answer

Switch the radio off

Answer

Wait for an email response

Answer

Make a phone call to the marina

Question 6

How should a DSC distress alert be cancelled if it was sent accidentally?

Accepted Answer

Cancel the alert on the radio, then broadcast a cancellation message on Channel 16 to all stations and inform the coastguard

Answer

There is no way to cancel it

Answer

Simply switch the radio off

Answer

Send another DSC call saying 'cancel'