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Every seafarer's Certificate of Competency is issued and revoked by the flag state's maritime administration under STCW Regulation I/2. This directory identifies 18administrations with issuing-authority information we have verified — hand-curated or Firecrawl-sourced from the administration's own site — plus links to their online certificate-verification portals where they exist.
For the verification-portal deep-dive (with FAQ on how PSC officers check certificates), see STCW certificate verification by flag state.
The busiest issuing authorities by seafarer volume — over 80% of the world's serving crew hold a Certificate of Competency from one of these ten administrations.
MARINA (Maritime Industry Authority)
DG Shipping (Directorate General of Shipping)
Maritime and Coastguard Agency
USCG National Maritime Center
Autoridad Marítima de Panamá
Liberian Registry (LISCR)
Republic of the Marshall Islands Registry
Bahamas Maritime Authority
Norwegian Maritime Authority (Sjøfartsdirektoratet)
Hellenic Ministry of Maritime Affairs
Firecrawl-cached data from each administration's official website. Verification-portal availability varies — some issue via email/postal request rather than an online lookup.
中华人民共和国海事局
- [](https://mail.msa.gov.cn/)
Danish Maritime Authority | dma.dk
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Direktorat Perkapalan dan Kepelautan
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DEPARTMENT OF MARINE ADMINISTRATION
The Department of Marine Administration (DMA), under the Ministry of Transport, deals with maritime and shipping affairs, endeavouring the development of national maritime transpor…
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Information that may interest you
Denizcilik Genel Müdürlüğü
İSPANYA DENİZCİLİK İDARESİ İLE STCW PROTOKOLÜ İMZALANDI\\ DEVAMI](https://denizcilik.uab.gov.tr/haberler/ispanya-denizcilik-idaresi-ile-stcw-protokolu-imzalandi "")
118flag states in the directory don't yet have a verified STCW admin listing. Each links to its flag-state page where MLC ratification, PSC risk band, and general administrative contacts are documented.
Editorial confidence: how we grade. Admin URLs are Firecrawl-cached; verify the current issuing procedure with the administration before relying on it for certificate applications.