Restricted Operator's Certificate (GMDSS)

Code gmdss-roc · STCW A-IV/2

GMDSS Restricted Operator Certificate under STCW A-IV/2 — for vessels operating only in sea area A1 (within VHF coverage of a coast station). Limited to VHF DSC distress alerting and routine VHF traffic; a vessel sailing into A2/A3/A4 requires a GOC holder onboard.

Prerequisites: —
Duration: 35 hours
Validity: 5 years
Refresher: —
Typical cost: ~$480 USD

Common for small-vessel and coastal operations.

Where to take this course

Country guides list accredited training centres in the major seafarer-supplying nations:

Related glossary terms

High confidence

Editorial confidence: how we grade. Data sources and methodology: /sources.

Restricted Operator's Certificate (GMDSS): FAQ

What is the Restricted Operator's Certificate (GMDSS) (GMDSS-ROC) certification?: GMDSS Restricted Operator Certificate under STCW A-IV/2 — for vessels operating only in sea area A1 (within VHF coverage of a coast station). Limited to VHF DSC distress alerting and routine VHF traffic; a vessel sailing into A2/A3/A4 requires a GOC holder onboard. Referenced in STCW table A-IV/2. Category: Radio.
Who needs GMDSS-ROC?: GMDSS-ROC applies to seafarers in roles defined under STCW table A-IV/2. No formal prerequisites are listed in our directory. Without GMDSS-ROC, operators may decline to roster you for the relevant duties.
How long does GMDSS-ROC take?: Typical course duration is 35 hours (4.4 working days at 8h/day). This is face-to-face or blended-learning time at an approved training centre; revalidation refresher courses are usually shorter. Plan against your sea leave window before booking.
How much does GMDSS-ROC cost?: Typical cost is around US$480 at an approved provider. Cost varies widely by country and training centre quality; many shipping companies cover the course fee as part of the contract. Check with your manning agent or fleet department before paying out of pocket.
Where can I get GMDSS-ROC?: GMDSS-ROC is delivered by approved training centres in most major maritime training countries. Use our /training-centres directory and the certifications-by-country filters to find an approved provider near you. The flag administration of your seaman's book may also publish a list of accepted providers.
How long is GMDSS-ROC valid?: 5 years from issue. Plan your revalidation course before the expiry date; lapsed certificates may require re-sitting the full course rather than a refresher, and operators may refuse to extend a contract while a critical certificate is expired.

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Restricted Operator's Certificate (GMDSS): FAQ

What is the Restricted Operator's Certificate (GMDSS) (GMDSS-ROC) certification?

Who needs GMDSS-ROC?

GMDSS-ROC applies to seafarers in roles defined under STCW table A-IV/2. No formal prerequisites are listed in our directory. Without GMDSS-ROC, operators may decline to roster you for the relevant duties.

How long does GMDSS-ROC take?

Typical course duration is 35 hours (4.4 working days at 8h/day). This is face-to-face or blended-learning time at an approved training centre; revalidation refresher courses are usually shorter. Plan against your sea leave window before booking.

How much does GMDSS-ROC cost?

Typical cost is around US$480 at an approved provider. Cost varies widely by country and training centre quality; many shipping companies cover the course fee as part of the contract. Check with your manning agent or fleet department before paying out of pocket.

Where can I get GMDSS-ROC?

GMDSS-ROC is delivered by approved training centres in most major maritime training countries. Use our /training-centres directory and the certifications-by-country filters to find an approved provider near you. The flag administration of your seaman's book may also publish a list of accepted providers.

How long is GMDSS-ROC valid?

5 years from issue. Plan your revalidation course before the expiry date; lapsed certificates may require re-sitting the full course rather than a refresher, and operators may refuse to extend a contract while a critical certificate is expired.