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How to apply for a revalidation of a Certificate of Competency

Application form for revalidating an existing STCW deck or engineering officer Certificate of Competency (MSF 4201).

Updates to this page

From:
Maritime and Coastguard Agency
Published:
17 April 2014
Last updated:
6 November 2025
Show all updates

  1. Vegetable Oil Tanker option has been removed, this now counts as Chemical Tanker.

  2. Complete format change, simplifying the view of requirements and guidance.

  3. Added Passport Photo Form, and updated Application Form MSF 4201 and Signature Form.

  4. New version of the Form and inclusion of stand-alone Signature Form.

  5. Important information added to the payment section.

  6. Updated form (added GMDSS box)

  7. This form now makes reference to MSN 1861 Amendment 1, along with other updated notices

  8. Updated form

  9. New version of the the form available

  10. New form - updated signature section

  11. COVID-19 update (unable to accept applications by post)

  12. Updated information in the COVID-19 section.

  13. Added information regarding COVID-19 and MIN 611

  14. Updated version of form

  15. Application form updated with fee change.

  16. Application form updated

  17. Application form updated

  18. Application form has been updated

  19. New version of the form available.

  20. First published.

Documents

MSF 4201 - Application to revalidate a UK CoC

Ref: Rev 11/25

PDF, 393 KB, 10 pages

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email infoline@mcga.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Passport Photo Form (Optional)

Ref: Rev 07/24

PDF, 433 KB, 5 pages

This file may not be suitable for users of assistive technology.

Request an accessible format
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email infoline@mcga.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

Please email your application and supporting documents to revalidation@mcga.gov.uk

Please ensure your documents are included as attachments or within a .zip folder. Unfortunately, we cannot open .rar extensions or links to file-sharing services (e.g. OneDrive, Google Drive, Dropbox etc).

You must complete the Application Form MSF 4201. The Passport Photo Form is optional for those who wish to submit a new photograph in cases where your previous CoC photograph is of poor quality or your appearance has significantly changed.

If you have any queries, please see our detailed guidance on how to revalidate a UK CoC.

If you are revalidating only your GMDSS Certificate, please use form MSF 4354 instead.

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