IMO STCW Convention — Standards of Training, Certification and Watchkeeping (STCW-78, as amended)
Issuing body / enforcer: International Maritime Organization (IMO). Implemented nationally by flag-state maritime administrations (in the US: the Coast Guard under 46 CFR Part 10); compliance of states is checked through the IMO Member State Audit Scheme and the "white list" of compliant flag states. Jurisdiction: International — applies to seafarers serving on seagoing ships; near-universal ratification.
What it is
STCW-78 (as amended, most significantly by the 2010 Manila Amendments) sets the global minimum standard for who may stand a watch at sea: what training, sea service, medical fitness, and certification a master, officer, or rating must hold, and how watches must be organised (hours of rest, alcohol limits, watchkeeping principles). It is the reason a Filipino able seaman, a Ukrainian second engineer, and an American third mate can serve together under mutually recognised certificates — the Convention plus bilateral recognition creates a global labour market with a common competence floor. Flag states issue Certificates of Competency (CoC) and endorsements; the IMO white list records which states' systems are trusted.
Scope: who it applies to
Masters, officers, ratings, and other personnel serving on seagoing ships subject to the Convention — deck (Chapter II), engine (Chapter III), radio (Chapter IV), and ratings/specialised personnel (Chapters V–VII). Fishing vessels are covered separately by STCW-F (amended, with mandatory Code in force 1 January 2026).
Key requirements and compliance obligations
- Certification structure. CoCs by function and level (operational/management): e.g., officer in charge of a navigational watch (II/1), chief mate/master (II/2), officer in charge of an engineering watch (III/1), second/chief engineer (III/2), electro-technical officer (III/6). Each requires approved education/training, sea service, and assessment of competence tables in the STCW Code Part A.
- Basic safety training (A-VI/1) — mandatory for all seafarers: personal survival techniques, fire prevention and firefighting, elementary first aid, personal safety and social responsibilities (PSSR).
- Security training (A-VI/6) — security awareness and designated security duties (post-ISPS).
- Hours of rest (Chapter VIII). Minimum 10 hours rest per 24 hours (no more than two periods, one ≥6 hours) and 77 hours per 7 days; records subject to PSC inspection. Alcohol limit: 0.05% BAC / 0.25 mg/l breath.
- Medical fitness and eyesight standards; refresher training every 5 years for basic safety, survival craft, advanced firefighting, and tanker endorsements.
- Endorsement and recognition. Certificates are issued by the flag state; other flags recognise them through bilateral undertakings (Regulation I/10). Fraudulent certificates are an industry-wide enforcement target (IMO/ILO action on certificate fraud).
- Company and master responsibilities: the company must ensure seafarers are properly certificated and familiarised; the master must verify.
Penalties and consequences of non-compliance
Port-state control detains ships with uncertificated or fraudulently certificated crew, or with hours-of-rest violations; flag states can suspend/revoke CoCs (in the US: Part 5 proceedings); companies face ISM non-conformities (no valid DOC/SMC crewing); and operating with unqualified crew voids P&I cover for resulting casualties. Criminal liability for forged certificates exists in most flag states.
Version / edition status and live changes (verified 2026-09-30)
- In force 1 January 2026 — the STCW 2024 amendments (Res. MSC.560(108)): new mandatory minimum requirements in STCW Code table A-VI/1-4 (PSSR) on the prevention of and response to violence and harassment, including sexual harassment, bullying, and sexual assault. Seafarers whose PSSR predates the change need gap/bridge training — crewing departments now treat the updated PSSR as a hiring filter.
- Comprehensive review of the STCW Convention and Code — underway, Phase 2. HTW 12 (February 2026) progressed the review: Phase 1 identified gaps; Phase 2 is drafting amendments, currently focused on Chapters II (deck) and III (engine). Provisional direction includes: up to three months of required sea service substitutable by approved simulator training for first CoCs (II/1, III/1, III/6) — supported by 37+ flag states; new competences on mental health, cultural awareness, and violence/harassment; BWMS knowledge; and criteria for approved training recognition. The review is expected to conclude around 2029 — the first full rewrite since Manila.
- Alternative fuels: HTW 12 agreed draft interim training guidelines for seafarers on ships using methyl/ethyl alcohol and ammonia as fuel (submitted to MSC 111, May 2026, for approval) — the training framework for the fuel transition is being built ahead of the ships.
- Fatigue: HTW 12 launched a new workstream on fatigue and hours of work/rest.
Related certifications (from the engineering catalogue)
Directly the credentialing regime:
- STCW Basic Safety Training (A-VI/1) — the Convention's mandatory entry ticket; the 2026 PSSR anti-harassment module now sits inside it.
- USCG MMC — Third/Second/First Assistant Engineer; Chief Engineer (Unlimited/Limited) — the US implementation: STCW endorsements (e.g., III/2 second engineer officer) are issued on the MMC for international service; examinations and sea-service requirements execute STCW Tables A-III/1 and A-III/2 domestically.
- CEng / MRINA — not a seagoing credential; no STCW relationship.
Honest flags
- The comprehensive-review outcomes (simulator substitution, new competences) are provisional HTW agreements, not adopted amendments — do not treat them as in force.
- White-list status and bilateral recognition arrangements change — verify a flag state's current recognition before crewing decisions.
Original ETS reference writing, verified against public sources on 2026-09-30. Thin sourcing is flagged inline. Not legal advice — confirm current editions with the issuing body.