Element 7: GMDSS Radio Operating Practices

effective 8/01/2006

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7-A-038: Other Procedures

7-38E1: Which of the following steps should be taken, if possible, when the vessel must be abandoned because of a Distress situation?

Secure the EPIRB to the survival craft and mount the SART in a position to maximize its elevation.

Alert the U.S. Coast Guard by using the survival craft's portable INMARSAT unit.

Program the SART and EPIRB to transmit the vessel's location and situation.

No additional steps are needed as the SART and EPIRB will both automatically float free and operate properly.



7-38E2: Which action is the most appropriate action for a GMDSS radio Operator to take in a Distress situation where immediate help is needed, but the vessel is not sinking nor needs to be abandoned?

Transmit Distress calls by HF/MF/VHF DSC or Inmarsat.

Switch off EPIRB and SART manually.

Notify the RCC (Rescue Coordination Center) through VHF FM on channel 13.

Transmit Distress call by activating the radiotelegraph automatic alarm signal.



7-38E3: DSC is used primarily to:

Transmit and receive Distress, Urgency and Safety alerts and routine calls to and from other ships and coast radio stations.

Receive weather warnings, navigational notices and other Maritime Safety Information.

Provide routine communications with the ship owner.

Report ship's position to search-and-rescue authorities via satellite.



7-38E4: GMDSS vessels equipped for Sea Areas A2, A3 or A4 must maintain a continuous DSC watch on 2187.5 kHz.

At all times when underway.

Only in areas beyond Inmarsat coverage.

Only outside of areas covered by VHF-DSC.

When directed to do so by a cognizant rescue authority.



7-38E5: Which statement is true regarding Distress communications under GMDSS?

The Rescue Coordination Center (RCC) is responsible for controlling a search and rescue operation, will coordinate the Distress traffic relating to the incident and may appoint another station to manage the Distress traffic.

Distress communications by (SITOR) NBDP should be in the BFEC mode when in two-way communications with the Coast Guard or other coast radio stations.

The Rescue Coordination Center may not appoint another station to coordinate Distress traffic relating to the incident.

Initial Distress communications by (SITOR) NBDP should be in the ARQ mode to broadcast them to the Coast Guard, other coast radio stations and other ship stations.



7-38E6: When operating in coastal waters (sea area A1), a GMDSS-equipped vessel must:

Maintain a continuous DSC watch on VHF channel 70.

Maintain a continuous DSC watch on 8514.5 kHz.

Maintain a continuous aural watch on 2182.0 kHz.

Maintain a continuous DSC watch on VHF channel 16.





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Element 7: GMDSS Radio Operating Practices
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