STCW Certificate Renewal: What Expires When, How to Revalidate, and What It Costs

Before the 2010 Manila Amendments to STCW came into full force in 2017, most seafarer certificates had no expiry date. Today, virtually every STCW certificate has a five-year validity period. For seafarers who completed their initial training as a package — typically during a cadetship — everything was issued at the same time and will expire at the same time. If you have never planned your revalidation, that moment is approaching, and the combined cost of renewing everything at once can exceed £3,000.

Which Certificates Require Revalidation Every Five Years

The Two Revalidation Routes

Route 1: Qualifying Sea Service

If you have completed at least 12 months of qualifying sea service in the past five years and have been exercising the relevant STCW competencies during that service, you can revalidate many certificates by submitting a declaration of sea service to the MCA (or your flag state authority) rather than attending a refresher course. Your CoC is then revalidated by the MCA on receipt of the valid underlying certificates.

Important nuances: you must have been actively exercising each specific competency. An officer who has sailed as a watchkeeper but has not performed any firefighting duties during their sea service may still need an AFF refresher, even with valid sea service. The MCA publishes detailed guidance on qualifying sea service for each certificate — read it before assuming your service covers everything.

Route 2: Refresher Course

If you do not have qualifying sea service — because you have been ashore, on leave, or working in a role that did not exercise the relevant competencies — you must complete an approved refresher course for each certificate. Refresher courses are shorter than the original courses: a full BST package originally takes 5 days; the BST refresher is typically 2–3 days.

Approximate refresher course costs in 2026:

• BST Refresher (full package): £350–£500
• Advanced Firefighting refresher: £200–£350
• PSCRB refresher: £200–£300
• GMDSS GOC renewal course: £800–£1,500 (this is a substantial renewal — plan early)
• HELM Operational refresher: £300–£500
• ECDIS refresher (generic): £350–£550

What Happens If Certificates Lapse

A certificate that has been expired for a short period (typically up to 12 months) can usually be renewed by completing the standard refresher course. A certificate that has been expired for more than 12 months may require the full original course rather than a refresher — at significantly greater cost and time commitment. A very long lapse (several years) may require repeating your original cadetship-level training in those areas. Do not let this happen.

The Compounding Expiry Problem

If you completed your initial STCW training as a cadet in a single block, all your certificates were issued within the same 12-month window. That means they all expire within the same 12-month window — five years later. Presenting yourself to an MCA-approved centre with six certificates to renew simultaneously is both expensive and logistically disruptive.

The solution is to spread your renewals over a rolling schedule. After your first round of renewals, consider completing them one at a time (or in pairs) over a 12-month period, staggered at 6-month intervals. This spreads the cost and means you are never more than a few months away from a renewal rather than facing a single large event every five years.