Crew Fatigue: The IMO 2026-2027 Review Process
Fatigue management is already part of safe operations: adequate manning, effective rest and reliable records. The ongoing IMO review examines the effectiveness of the existing framework; it does not defer present duties until 2027.
Operational Explanation
Apply the relevant regime: STCW A-VIII/1 requires at least 10 hours of rest in 24 and 77 in seven days for the personnel covered. MLC A2.3 permits national rules to set maximum work (14 hours in 24 and 72 in seven days) or minimum rest (10 and 77). Rest is ordinarily divided into no more than two periods, one at least six hours long, with no more than 14 hours between consecutive rest periods. Exceptions and emergencies have specific conditions: routine commercial activity and chronically inadequate schedules are not a general exemption.
The work is coordinated with the III (Implementation of IMO Instruments) sub-committee, given that the practical effectiveness of rest rules depends largely on their application and enforcement, not only on their text. Completion of the scoping exercise is expected in 2027: this is therefore a preparatory stage, not an immediate new obligation, but it is the most concrete signal so far of a possible future revision of the regulatory framework on fatigue.
Regulatory Reference
HTW 12 (23-27 February 2026): launch of a formal scoping exercise on the effectiveness of the hours of work and rest rules set out in STCW Regulation VIII/1 and MLC Regulation 2.3, in coordination with sub-committee III. Completion expected in 2027, ahead of HTW 13, which is to identify the gaps in the instruments and in the effectiveness of their implementation; no regulatory change has yet been adopted.
Current duties to read together: ISM 1.2.2.2 and 6.2; MSC.273(85) · MSC.353(92) · IMO MSC 110.
HTW 12/12, §§8.10–8.11, records the preliminary lists and correspondence group instructed to report to HTW 13. The 2027 target belongs to the work programme; it is not an entry-into-force date for new limits. Source: IMO HTW 12/12 (PRS).
Scope of Application
Every Company and every seafarer subject to the STCW/MLC hours of work and rest requirements; the scoping exercise does not yet introduce additional obligations, but signals a possible future revision to monitor.
Procedure / How to Complete It
- Identify applicable STCW, MLC, flag and contractual provisions, including the conditions for any exceptions.
- Record actual work and rest, including call-outs and interruptions; arrange compensatory rest where required.
- Assess fatigue risk and adequate manning in the SMS under ISM 1.2.2.2 and 6.2, taking all activities and peak workloads into account.
- Adjust schedules, workload or resources when safety or rest is compromised; report and analyse deviations rather than normalising them.
- Monitor the IMO scoping work targeted for 2027 as a future development, not an entry-into-force date.
Practical Example
Example: frequent port calls repeatedly interrupt rest. The Company and Master examine actual records and workload, revise schedules and resources, and check effectiveness. This addresses an existing risk; it is not an optional review pending 2027.
What Typically Goes Wrong
Common Mistakes Mistake Library
| Mistake | Consequence | How to avoid it |
|---|---|---|
| Formally tidy but inaccurate records | Fatigue and breaches remain hidden | Record actual work, rest and interruptions |
| Deferring manning and fatigue assessment until the 2027 review | Existing safety duties are left unaddressed | Assess resources and risks in the SMS now |
What the PSCO Checks
Operational Tips
- Don't wait for the outcome of the HTW scoping exercise (expected in 2027) to review the real adequacy of manning relative to workload.
- Treat the recording of rest hours as a fatigue management tool, not just a form to be filled in correctly.
- Maintain an open communication channel between crew and Company on signs of fatigue, even when formal limits are being met.
Preparation checklist
Educational checklist. This summary supports learning and preparation only. It does not replace the vessel’s approved procedures, manuals, statutory documents, company SMS, or applicable official requirements. Completing it demonstrates neither compliance nor readiness for an inspection: it shows that a list has been read, not that the ship is in order. Always verify the current documents carried on board.
- Applicable STCW/MLC regime and flag conditions identified
- Records reflect actual work and rest
- Fatigue risk and adequate manning assessed within the SMS
- Deviations, compensatory rest and corrective measures documented
- 2027 scoping distinguished from an amendment already in force
FAQ
Related Topics
Last substantive revision of this page: 15 September 2026 · page fingerprint 986914882afb