GOC GMDSS Exam study materials
GOC GMDSS Exam study resources

GOC GMDSS Exam case studies

GOC GMDSS Exam · Put your knowledge to work in context.

The General Operator's Certificate (GOC) is the GMDSS radio operator credential that lets a qualified person operate the radio installation on a vessel subject to the Global Maritime Distress and Safety System carriage requirements. It is held by deck officers and dedicated radio operators who may need to transmit distress, urgency and safety traffic, keep a radio watch, and manage the ship's radio log. The GOC GMDSS Exam case studies are 5 cases and about 2,781 words.

1

DSC Distress Alert Not Acknowledged on MF/HF

You are the sole radio operator on a 180 m bulk carrier in sea area A3, about 900 nm east of Japan, at 0340 UTC. A crew member reports a fire in the engine room.

647 words, about 3 min
2

NAVTEX and EGC Reception in a Coastal Passage

You are the navigating officer on a 120 m general cargo ship on passage along a coast where NAVTEX coverage is provided by two stations, one transmitting on 518 kHz and one on 490 kHz. The vessel's NAVTEX receiver is a dual-frequency model set to receive 518 kHz and 490 kHz.

540 words, about 3 min
3

EPIRB and SART Activation During an Abandonment Drill

During an abandonment drill on a 90 m offshore supply vessel in sea area A1/A2, the crew activate a float-free EPIRB and a SART. The EPIRB is a 406 MHz model with a 121.5 MHz homing transmitter.

571 words, about 3 min
4

Battery and Power Supply Failure on a GMDSS Equipped Vessel

You are the chief officer on a 150 m container ship in sea area A3. The vessel's GMDSS installation includes a VHF DSC, MF/HF DSC and radiotelephony, Inmarsat-C, NAVTEX, EPIRB and two SARTs.

491 words, about 2 min
5

HF Propagation and Frequency Selection for Distress Traffic

You are the radio officer on a 200 m tanker in the Indian Ocean, about 1,200 nm from the nearest coast, at 0200 UTC. The vessel is in sea area A3.

532 words, about 3 min