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Event date Tue, Dec 28 2021, All day event
Event date Killybegs
Event date €225

GMDSS GOC 1-day refresher, Donegal

The GOC General Operator Certificate course gives the professional seafarer competence in the operation of MF/HF and INMARSAT – C / Fleet 77 systems, as well as VHF.

Who this course is for: The professional seafarer who has already completed a GMDSS GOC but is in need of a refresher.

Length of course: This course is held over 1 day.

Objective: To gain the skills and knowledge to confidently and correctlyoperate Inmarsat C/Fleet 77 satellite and VHF/HF/MF radio equipment,including Digital Selective Callings (DSC), EPIRB, SART, and NAVTEX.

Assessment: None.

Prerequisites: Candidates must be over 18 years of age and have an adequate level of English to understand the course content and exam questions. Should be in possession of a GOC issued in the last 15 years.

Format of the course: Prior to the course, candidates are encouraged to access our online simulator.

A comprehensive course manual will be given in-class and each student will have hands-on practice with our classroom GMDSS simulator, as well as plenty of practical experience with EPIRBs, SARTs, and NAVTEX.


  • Principles of the Maritime Mobile Service
  • Principles of the Maritime Mobile Satellite Service
  • Ship station including receivers, VHF radio installation, MF/HF,
  • antennas, power supplies, survival craft radio equipment
  • Digital Selective Calling (DSC)
  • Inmarsat systems
  • GMDSS system and subsystems
  • Inmarsat usage in GMDSS
  • Distress, urgency and safety communications in GMDSS
  • Distress, urgency and safety in communications using radiotelephony
  • Search and Rescue operation (SAR)
  • Obligatory procedures and practices
  • General communications procedures

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