STCW Communication Systems 5

Question 1

What does the urgency signal 'PAN-PAN' indicate in maritime radiotelephony?

Accepted Answer

A very urgent message concerning safety of the ship or a person, but not immediate danger to life

Answer

PAN-PAN indicates an urgent situation concerning safety of a vessel or person that does not yet require immediate rescue assistance.

Question 2

Under GMDSS, which Sea Area covers the range served by MF radio (approximately 150-400 nm from shore)?

Accepted Answer

Sea Area A2

Answer

Sea Area A2 is defined as the area, excluding Sea Area A1, within radiotelephone coverage of at least one MF coast radio station (approximately 150-400 nm).

Question 3

What is the function of the DSC frequency 2187.5 kHz?

Accepted Answer

MF DSC distress alerting frequency

Answer

2187.5 kHz is the dedicated MF DSC frequency for transmitting and receiving digital distress alerts in Sea Areas A1 and A2.

Question 4

How should a vessel respond upon receiving a DSC distress alert from another ship?

Accepted Answer

Wait at least 5 minutes before acknowledging to avoid congesting the distress frequency

Answer

To avoid simultaneous transmissions that block the distress frequency, vessels should wait before acknowledging so the nearest coast station or rescue authority can respond first.

Question 5

What is the power output requirement for a fixed VHF radio installation under SOLAS?

Accepted Answer

25 watts minimum

Answer

SOLAS requires fixed VHF radio installations to have a minimum power output of 25 watts to ensure adequate range for ship-to-ship and ship-to-shore communications.

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

(STCW) Standards Certification and Watchkeeping for Seafarers Practice Test

STCW Communication Systems 5