STCW refresher-cycle calculator
Every STCW course carries a refresher cycle (typically 5 years, with STCW A-I/9 medicals at 2 years). Miss the refresher + you cannot legally join a vessel — no matter how experienced you are. This calculator tracks every certificate in one place. Enter each issue date + get the expiry + remaining months.
Enter the issue date of any STCW certificate you hold. Empty rows are skipped. The calculator remains in your browser only — nothing is stored server-side.
| Certificate | Issue date | Expires | Months remaining | Status |
|---|---|---|---|---|
| Basic Safety Training (STCW A-VI/1) | — | — | — | |
| Advanced Fire Fighting (STCW A-VI/3) | — | — | — | |
| Proficiency in Survival Craft + Rescue Boats (STCW A-VI/2) | — | — | — | |
| Medical First Aid (STCW A-VI/4-1) | — | — | — | |
| Medical Care (STCW A-VI/4-2) | — | — | — | |
| Ship Security Officer (STCW A-VI/5) | — | — | — | |
| Security Awareness (STCW A-VI/6) | — | — | — | |
| Basic Tanker (A-V/1-1-1) | — | — | — | |
| Advanced Oil Tanker (A-V/1-1-2) | — | — | — | |
| Advanced Chemical Tanker (A-V/1-1-3) | — | — | — | |
| Basic Liquefied Gas Tanker (A-V/1-2-1) | — | — | — | |
| Advanced Liquefied Gas Tanker (A-V/1-2-2) | — | — | — | |
| ECDIS (STCW A-II/1) | — | — | — | |
| GMDSS General Operator's Certificate | — | — | — | |
| STCW A-I/9 Medical Certificate | — | — | — |