Marine Operations

Radiotelephony Restricted Operators Certificate (ROC) (GMDSS)

Duration:  3 days (including exam)
Per Delegate:  £875.00

Practical Content


Theoretical Content


There are no prerequisites for this course. 

Key Learning Outcomes

  • Gain an understanding of VHF radiotelephony procedures in the maritime mobile service.
  • Develop the skills to operate the relevant equipment.
  • Understand operational procedures of the Global Maritime Distress and Safety System (GDMSS) and have the ability to explain detailed practical operation of all sub-systems and equipment.

Course Content

  • Safety of life at sea
  • GMDSS communication procedures and regulations
  • Operation of VHF radio equipment
  • Operation of digital selective calling and Navtex equipment
  • Emergency Position Indicating Radio Beacons (EPIRBs) and Search and Rescue Transponders (SARTs)


Delegates will undertake a written examination paper, radio communication exercise and operational performance test to demonstrate they have achieved the key learning outcomes detailed above. These are assessed by an external AMERC (Association of Marine Electronic and Radio Colleges) examiner and the exam papers are then sent to AMERC for verification.

PPE Requirements

PPE not required.

Further Information

This classroom based course is delivered using a live and integrated Transas computer based satellite communication simulator.

This certificate is the minimum level of maritime qualification required by professional seafarers. It meets all STCW conditions; is the minimum requirement for the MCA Certificates of Competence; and provides a license to operate as required by the Wireless Telegraphy Act 2006 for persons transmitting on Marine frequencies.

Target Audience
Target Audience

Offshore radio operators and other personnel who are required to operate transmitters on VHF Maritime Frequencies (within GMDSS Sea Area A1).


GMDSS Restricted Operators Certificate (ROC) is issued by AMERC following verification of the examination papers.

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