DWO Maritime Communication 2

Question 1

When a vessel transmits a MAYDAY relay on behalf of another vessel in distress, the call begins with which phrase?

Accepted Answer

MAYDAY RELAY MAYDAY RELAY MAYDAY RELAY

Answer

A MAYDAY relay starts with 'MAYDAY RELAY' spoken three times to distinguish it from an original MAYDAY call.

Question 2

Which DSC distress category requires a response from all vessels and coast stations within range?

Accepted Answer

Distress

Answer

A DSC Distress category alert demands immediate response from all stations, as it signals imminent danger to life or vessel.

Question 3

What is the maximum transmit power allowed on VHF Channel 16 for a ship station?

Accepted Answer

25 watts

Answer

Ship VHF radiotelephones are limited to 25 watts output power on Channel 16 and other working channels.

Question 4

A vessel receives a DSC urgency alert. The officer of the watch should acknowledge on DSC and then listen on which channel?

Accepted Answer

VHF Ch 16

Answer

After acknowledging a DSC urgency alert, the watch officer listens on VHF Ch 16 for the subsequent voice message.

Question 5

The phonetic alphabet word for the letter 'K' is:

Accepted Answer

Kilo

Answer

In the ITU phonetic alphabet standardized for maritime use, 'K' is represented by 'Kilo'.

(DWO) Deck Watch Officer Practice Test