WPC GMDSS GOC Exam (India) study guide
WPC GMDSS GOC Exam (India) · Work through your exam, one topic at a time.
The General Operator's Certificate (GOC) is the radio-operator qualification required for personnel who operate GMDSS radio equipment on board ships under the Indian regulatory framework administered by the Wireless Planning & Coordination (WPC) Wing, in coordination with the maritime administration. It is aimed at deck officers, radio personnel and candidates preparing for watchkeeping duties who must be able to handle distress, urgency and safety communications across radiotelephony, DSC, satellite and terrestrial systems. The WPC GMDSS GOC Exam (India) study guide has 10 sections and about 3,665 words.
01GMDSS General Principles and System Architecture
This domain tests whether you can place a ship in the correct sea area, state the GMDSS functional requirements, and select the minimum equipment that satisfies SOLAS chapter IV. Questions are usually scenario-based, so learn the boundaries, not just the labels.
349 words, about 2 min02Radiotelephony Communications (Distress, Urgency, Safety)
The exam tests your ability to compose and transmit the three priority messages correctly, to use the right frequency, and to control or close distress traffic. Radiotelephony remains the primary on-scene medium even in a DSC-based system.
348 words, about 2 min03Digital Selective Calling (DSC) Operations
DSC questions test the alert contents, the correct distress frequency, the acknowledgement rules, and your ability to avoid and cancel false alerts. VHF Ch 70 (156.525 MHz); MF 2187.5 kHz; HF 4207.5, 6312, 8414.5, 12577 and 16804.5 kHz.
410 words, about 2 min04Satellite Communications (Inmarsat) and Maritime Safety Information
This domain tests the satellite element of A3: which service does what, how distress priority reaches an RCC, and how MSI is delivered by SafetyNET. Inmarsat is geostationary, so coverage is roughly 70°N–70°S.
343 words, about 2 min05Emergency Position Indicating Radio Beacons (EPIRB) and Search and Rescue Transponders (SART)
The exam separates two devices that candidates constantly mix up: the EPIRB alerts the shore, the SART helps the rescue unit find the survival craft on radar. Cospas-Sarsat system; transmits in the 406.0–406.1 MHz band with a 121.5 MHz homing signal; 48-hour operation; float-free with a hydrostatic release unit; strobe light.
339 words, about 2 min06Maritime Safety Information (MSI) and NAVTEX
NAVTEX questions are usually about reading the message header, selecting the right subject indicators, and knowing which frequency serves which purpose. 518 kHz : international NAVTEX, English, the primary GMDSS frequency.
332 words, about 2 min07Radio Regulations, Licensing, and Frequency Management
This domain checks that you know the legal framework behind the equipment: who licenses the ship, who certifies the operator, and which transmissions are prohibited. The GOC is the operator certificate required for GMDSS radio duties on SOLAS ships; the ROC is the restricted certificate for VHF-only operation.
378 words, about 2 min08Distress, Urgency, and Safety Procedures and Protocols
This domain tests traffic control and coordination rather than message wording: who controls the distress, when to relay, how to close the incident, and how to handle false alerts and on-scene working. A coast station or a designated ship imposes silence with SEELONCE MAYDAY and identifies itself.
395 words, about 2 min09Radio Equipment Maintenance, Fault Diagnosis, and Batteries
The exam tests the SOLAS maintenance philosophy, battery care numbers, and a logical fault-finding sequence rather than deep electronics. At-sea maintenance may be met by duplication of equipment, by shore-based maintenance, or by at-sea electronic maintenance capability.
388 words, about 2 min10Operational Procedures and Watchkeeping
This domain tests the routine that keeps the GMDSS reliable: what watch is kept, what is logged, what is tested daily, weekly and monthly, and how the watch is handed over. Continuous DSC watch on VHF Ch 70 and on MF 2187.5 kHz, according to the sea area.
383 words, about 2 min