• Dec 18, 2025
Flag State Endorsements: A Practical Overview
Working on a foreign-flagged vessel usually requires an endorsement from that flag state. Here is how endorsements work and how to manage them.
VerifiedCrew Compliance
Dec 18, 2025
What is a flag state endorsement
A flag state endorsement, sometimes called a recognition or attestation, is a document issued by a flag state confirming that it recognizes your Certificate of Competency issued by another country.
If you hold a CoC from the Philippines and want to work on a vessel flagged to the Marshall Islands, you need a Marshall Islands endorsement of your Philippine CoC. The endorsement confirms that the Marshall Islands recognizes your qualification as valid for service on its vessels.
Why endorsements are needed
The STCW Convention allows flag states to accept certificates issued by other countries, but only after verifying that the issuing country meets STCW standards and that the individual certificate is genuine.
This verification process results in the endorsement. It protects the flag state by confirming that crew serving on its vessels hold legitimate, STCW-compliant qualifications. It protects you by giving your qualification formal recognition under that flag.
How to apply
The application process varies by flag state, but typically involves submitting your original CoC (or certified copy), proof of identity, a medical fitness certificate, evidence of qualifying sea service, and the application fee.
Some flag states accept applications directly. Others require you to apply through an approved manning agent or designated representative in your country. Processing times range from two weeks to three months depending on the administration.
Managing multiple endorsements
Many seafarers hold endorsements from three or more flag states simultaneously. Each endorsement has its own validity period, which may or may not align with the underlying CoC expiry.
Tracking multiple endorsements manually is error-prone. An endorsement that expires while you are at sea can result in port state control deficiencies. The safest approach is to maintain a centralized record of all your endorsements with automated expiry alerts.
When your underlying CoC is renewed, remember that your endorsements do not automatically renew. Each flag state must be notified and the endorsement updated or reissued separately.
Common issues
The most common issue is processing delays. Flag state administrations have limited staff and high volumes. Applying well in advance of your planned embarkation date avoids the stress of waiting for an endorsement while a job offer sits on the table.
Another frequent issue is document requirements changing without notice. Flag states periodically update their application requirements. Always check the current requirements before submitting, even if you have applied to the same flag state before.
Endorsement refusals are uncommon but can happen if the flag state identifies issues with the underlying CoC or if the issuing country is under review for STCW compliance. If your endorsement is refused, the flag state must provide a reason.
The future of endorsements
As digital credentials gain acceptance, the endorsement process is expected to become faster and more automated. Flag states that adopt digital verification can confirm the validity of a foreign CoC in minutes rather than weeks.
Several flag states are already piloting digital endorsement workflows. The long-term direction is clear: endorsements will eventually be issued and verified digitally, reducing wait times and administrative burden for everyone involved.