RYA SRC DSC Operations 3

Question 1

When sending a DSC distress alert, which channel is used for the subsequent voice distress call?

Accepted Answer

Channel 16

Answer

After a DSC distress alert is sent on Channel 70, the voice distress call and communications are conducted on Channel 16.

Question 2

What does the term 'MMSI' stand for in DSC operations?

Accepted Answer

Maritime Mobile Service Identity

Answer

MMSI stands for Maritime Mobile Service Identity, a unique nine-digit number assigned to a vessel's radio equipment for DSC identification.

Question 3

A DSC urgency call uses which category?

Accepted Answer

Urgency

Answer

An urgency call is preceded by the PAN PAN signal and uses the Urgency category in DSC, which is one level below Distress.

Question 4

How many digits make up a vessel's MMSI number?

Accepted Answer

9

Answer

An MMSI number consists of exactly nine digits and uniquely identifies a ship station or group of ship stations.

Question 5

Which nature of distress code would you select on DSC if your vessel is sinking?

Accepted Answer

Flooding

Answer

Flooding is the correct DSC nature of distress code to select when a vessel is sinking or taking on water.

RYA SRC Practice Test