GMDSS vessels equipped for Sea Areas A2, A3...

Question 1 / 2707081kaj4a4UvjExqyIQLH9

Question 1 of 2707081kaj4a4UvjExqyIQLH9

GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.

Question 1 of 27070

GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.

🔍 Key Concepts

• GMDSS Sea Areas A2, A3, A4 and what additional equipment/watchkeeping each area requires • The purpose of MF-DSC on 2187.5 kHz in relation to VHF-DSC and satellite systems • Continuous watchkeeping requirements under GMDSS for ships at sea

💭 Think About

• Ask yourself: What is 2187.5 kHz used for in GMDSS, and which ships must guard it? • Think about whether the requirement to keep a DSC watch on 2187.5 kHz is conditional on location (coverage areas) or on the ship being at sea and properly equipped. • Compare how the watchkeeping rule for 2187.5 kHz differs from a situation where a Rescue Coordination Center might give specific directions.

✅ Before You Answer

• Verify what Sea Area A2 coverage is defined by (MF-DSC coast station range) and which distress frequency is used there. • Check GMDSS rules on continuous DSC watch: are they tied to equipment fit (A2/A3/A4) or to special orders from an authority? • Confirm whether the presence or absence of VHF-DSC or Inmarsat coverage changes the basic requirement to keep a watch on 2187.5 kHz for A2/A3/A4 ships.

Question 1 of 27070

GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.

Only in areas beyond Inmarsat coverage.

Only outside of areas covered by VHF-DSC.

At all times when underway .

When directed to do so by a cognizant rescue authority.

Question 1 / 2707081kaj4a4UvjExqyIQLH9

Question 1 of 2707081kaj4a4UvjExqyIQLH9

GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.

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Question 1 of 27070

GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.