A PSC inspector steps aboard at Rotterdam. Before asking to see the ECDIS, the fire plan, or the oil record book, she asks for three things: the crew list, the certificate file, and the rest hour records for the last month. In under ten minutes, she will know whether your crew is legally qualified to operate the vessel, whether they have been given adequate rest between watches, and whether your company's safety management system is working in practice — or just on paper. Across the global fleet, crew documentation deficiencies consistently rank among the top five reasons for vessel detention under both Paris MOU and Tokyo MOU PSC regimes. The IMO's Standards of Training, Certification and Watchkeeping (STCW) Convention, the Maritime Labour Convention (MLC 2006), and flag state certification requirements create a matrix of obligations that applies to every seafarer on every vessel on every voyage. Yet most ships are still managing crew certificates in spreadsheets, rest hours in paper tables, and training records in folders that no one has audited since the last dry dock. Fleet operators using Marine Inspection's digital crew compliance platform report zero crew documentation deficiencies at PSC inspections and full certificate audit readiness in under 60 seconds — not the frantic 40-minute search that paper-based crew management produces when a flag state auditor arrives unannounced.
STCW & Crew Compliance — The Inspection Reality in Numbers
Top 5
PSC Deficiency Category
crew documentation and certification failures consistently rank in the top 5 causes of vessel detention globally under Paris and Tokyo MOU
160+
STCW Signatory States
nations bound by the STCW Convention, meaning certificate requirements apply on every international voyage regardless of flag
10 hrs
Minimum Daily Rest
STCW minimum rest requirement per 24-hour period — violations detected through rest hour records are an immediate PSC detention trigger
5 yrs
STCW Certificate Validity
standard validity period for most STCW certificates of competency — revalidation requires proof of sea service and refresher training within the window
The STCW Framework: What Every Fleet Manager Must Understand
The STCW Convention is not a single document — it is an interconnected system of competency standards, watchkeeping requirements, certification pathways, and training mandates that operates differently depending on rank, vessel type, and trade area. Understanding the structure is essential before you can assess whether your fleet is compliant. Fleet managers who book a demo with Marine Inspection see immediately how the platform maps every crew member's certificates against the STCW requirements for their rank and vessel type.
STCW Convention Structure at a Glance
The Convention
Sets binding obligations on signatory flag states and defines minimum qualification standards for all ranks
The STCW Code
Part A (mandatory): detailed competency tables for each certificate. Part B (recommended): guidance on implementation and training standards
Flag State Implementation
Each signatory nation issues certificates, approves training courses, and enforces STCW through their maritime administration — creating 160+ parallel certification systems that must be cross-recognized
I
General Provisions
Definitions, application scope, and obligations of parties. Establishes PSC inspection rights and flag state responsibilities.
II
Master & Deck
Watchkeeping officers, masters, and chief mates. OOW, Officer in Charge of Watch, Master CoC, GMDSS requirements.
III
Engine Department
Chief engineer, second engineer, officer in charge of engineering watch. MEWB, ETO, and electrotechnical officer certificates.
IV
Radio Communication
GMDSS operator certificates (GOC, ROC) for vessels equipped with global maritime distress and safety systems.
V
Special Training
Tanker endorsements (oil, chemical, gas), passenger vessel certificates, ro-ro and high-speed craft qualifications.
VI
Emergency & Safety
Basic safety training (PSSR), proficiency in survival craft (PSC), advanced fire fighting (AFF), medical first aid (MFAC/MFAP).
Mandatory Certificates: Rank-by-Rank Compliance Checklist
Every seafarer on a vessel subject to STCW must hold the certificates appropriate for their rank and function. The checklist below covers the mandatory certificates PSC inspectors verify for each position. All certificates below can be tracked digitally with auto-renewal alerts through Marine Inspection's crew certificate dashboard.
Master & Chief Mate
STCW Chapter II — Deck Department Command Level
Certificate of Competency (CoC) — Master or Chief Mate
Flag state issued. Valid 5 years. Must show unlimited or appropriate tonnage/trade area endorsement for the vessel being served on.
STCW II/2
GMDSS General Operator Certificate (GOC)
Required for all officer watchkeepers on GMDSS vessels. Valid 5 years. Revalidation requires proof of practical use or refresher course.
STCW IV/2
Radar / ARPA — Management Level
Radar observation and plotting, ARPA familiarization. Endorsed on CoC or separate training certificate. Checked against vessel's navigation equipment.
STCW II/2
Ship Security Officer (SSO) Certificate
Required for master and designated SSO. Covers ISPS Code implementation, security plans, drills, and incident reporting. No expiry but subject to SSO assignment records.
STCW VI/5
Medical First Aid (MFAP) — Management Level
Advanced medical care certificate required for masters and chief mates. Covers advanced first aid, medical care on board, and use of medical equipment. Valid 5 years.
STCW VI/4
Officer of the Watch (OOW) — Deck
STCW Chapter II — Operational Level Watchkeeping
Certificate of Competency — OOW (Deck)
Operational level deck watchkeeping certificate. Must match vessel's tonnage and trade area. Endorsement of recognition required if serving under a different flag state.
STCW II/1
GMDSS General or Restricted Operator Certificate
GOC for SOLAS vessels on international voyages. ROC acceptable for vessels on coastal or restricted voyages only. Sea service on GMDSS vessel required for revalidation.
STCW IV/2
Basic Safety Training — All 4 Elements
Personal survival techniques (PST), fire prevention and fire fighting (FPFF), elementary first aid (EFA), personal safety and social responsibilities (PSSR). All four must be current and endorsed on or referenced from CoC.
STCW VI/1
Proficiency in Survival Craft & Rescue Boats (PSC/SCRB)
Required for all deck officers. Covers lifeboat/rescue boat operation, survival equipment, and search and rescue procedures. Valid 5 years with revalidation.
STCW VI/2
Advanced Fire Fighting (AFF)
Mandatory for officers designated to control fire-fighting operations. Covers fire team command, fire detection systems, and fixed fire-fighting installations. Valid 5 years.
STCW VI/3
Chief Engineer & Second Engineer
STCW Chapter III — Engine Department Management Level
Certificate of Competency — Chief or 2nd Engineer
Engine power rating must match or exceed vessel's propulsion power. Flag state issue with appropriate tonnage and power endorsement. Endorsement of recognition required for cross-flag service.
STCW III/2
High Voltage (HV) Endorsement
Required if vessel operates HV electrical systems (>1,000V). Increasingly mandatory on modern container vessels, LNG carriers, and cruise ships. Verified against vessel's electrical plant specifications.
STCW III/6
Basic Safety Training — All 4 Elements
Same STCW VI/1 requirements apply to all engineering officers. PST, FPFF, EFA, and PSSR all current. Engine department officers commonly miss FPFF revalidation — one of the top engine-side deficiencies found by PSC.
STCW VI/1
Medical First Aid Certificate (MFAC)
Required for all engine officers designated in the muster list as medical first responders. Valid 5 years. Often overlooked in engine department — easy PSC finding.
STCW VI/4
All Crew — Universal STCW Requirements
Applies regardless of rank, department, or vessel type
Basic Safety Training (BST) — STCW VI/1
Mandatory for every seafarer assigned safety or pollution prevention duties. Covers all four elements. Certificate must be presented and verified before crew member joins vessel — no exceptions.
STCW VI/1
Crowd Management Training (Passenger Vessels)
Required for all crew on passenger ships with crowd management duties. Must be completed before crew member joins a passenger vessel for the first time in that capacity.
STCW V/2
Seafarer's Medical Certificate (ENG1 or equivalent)
Medical fitness certificate from approved medical examiner. Valid 2 years for seafarers under 55 and over 18; 1 year for seafarers 55 and over. Expired medical = legally unfit for duty.
MLC 2006 Reg 1.2
Seafarer's Discharge Book / Seaman's Booklet
National identity and sea service document. Must be valid and present on board. Sea service entries must be consistent with claimed qualifications for CoC revalidation.
MLC 2006 Reg 1.4
Rest Hours: The Compliance Area That Trips Up Even Good Vessels
Rest hour violations are the compliance area where well-run ships most commonly fail PSC inspections. The rules look straightforward on paper — but operational realities, port calls, drills, and cargo operations create chronic pressure on rest hour limits that can go undetected for weeks before an inspector finds a month's worth of violations in a single review. Operators who start their free trial with Marine Inspection find that automated rest hour tracking eliminates this risk entirely.
STCW Rest Hour Requirements — Visual Reference
Rule 1
10 hours
Minimum rest in any 24-hour period
Rule 2
77 hours
Minimum rest in any 7-day period
Rule 3
2 periods
Rest may be split into no more than two periods; one must be at least 6 hours
⚠ Permitted Exceptions (STCW Regulation VIII/1)
Emergency Drills & Musters — rest hours may be suspended during genuine emergencies and musters, but must be documented and compensated
Port Entry & Departure — masters may temporarily override rest requirements for safety of navigation; compensation rest required within 2 days
Collective Agreements — flag states and ITF/ITF-affiliated CTAs may permit alternative arrangements, but minimum 70 hours/7 days still applies
PSC inspectors will request rest hour records covering the most recent month. Any violations — even those caused by genuine port emergencies — must be documented with the reason and compensatory rest action. Undocumented violations are treated as wilful non-compliance.
What PSC Inspectors Check: The Crew Documentation Sequence
Port state control inspections follow a predictable documentation sequence when reviewing crew compliance. Understanding this sequence — and having every record instantly accessible — is the difference between a clean inspection and a deficiency list. Every item below is trackable and auto-alerted through Marine Inspection's platform.
Crew List & Safe Manning Certificate
What Inspectors Check
Safe Manning Document issued by flag state compared to actual crew on board. Every position on the SMD must be filled by a qualified, certificated seafarer. Shortfalls or mismatches are immediate deficiencies regardless of operational reason.
How to Stay Compliant
Digital crew list linked to Safe Manning Document with automatic gap detection. Any position that falls below SMD minimum triggers an alert to the superintendent before departure. Marine Inspection shows SMD compliance status fleet-wide in real time.
Certificate Verification — Original vs. Certified Copy
What Inspectors Check
Original certificates or certified true copies must be on board for every crew member. Inspectors verify validity dates, endorsements, flag state recognition (if applicable), and that certificates match the rank and function being performed. Photocopies not accepted.
How to Stay Compliant
Digital certificate register with expiry tracking and 90/60/30-day alerts. Certificate scan stored for reference; originals verified on join. Flag state recognition endorsement status tracked separately for each crew member serving under a different flag.
Rest Hour Records — Last 30 Days Minimum
What Inspectors Check
Rest hour tables for all watchkeeping officers and ratings for the preceding month. Inspectors calculate compliance with 10hr/24hr and 77hr/7-day rules. Any violation — even one — triggers deficiency. Uniform tables across all crew are suspicious and prompt deeper scrutiny.
How to Stay Compliant
Automated rest hour calculation flags violations in real time — before they accumulate into a pattern. Exception logging (port entry, drills) with compensatory rest tracking. Records signed digitally by each crew member. Marine Inspection produces the exact format requested by Paris and Tokyo MOU inspectors.
MLC Compliance Records — Employment & Living Standards
What Inspectors Check
Maritime Labour Convention compliance covers seafarer employment agreements (SEAs), wage payment records, accommodation standards, food and catering, medical care access, and repatriation entitlement. MLC inspections often run concurrently with STCW checks at the same port call.
How to Stay Compliant
SEA copies on board and in crew file for every seafarer. Wage records showing on-time payment for minimum 3 months. DMLC Part I and II available on request. Marine Inspection stores all MLC documentation in the same crew profile as STCW certificates — one inspection, one screen.
Compliance Readiness: Paper vs. Digital Crew Management
The gap between paper-based and digital crew compliance management becomes critical the moment a PSC inspector or flag state auditor arrives. These are the performance differences that matter most.
40+ min
Paper: Certificate Retrieval
Locating, verifying, and presenting all crew certificates during a live PSC inspection with paper records across multiple crew members.
< 60 sec
Digital: Full Crew Record
Complete certificate status, expiry dates, rest hour history, and MLC records for any crew member — searchable instantly on any device.
90/60/30
Certificate Expiry Alerts
Automated alerts at 90, 60, and 30 days before every certificate expires — STCW CoC, medical, BST, PSC, AFF — across the entire crew roster.
Zero
Crew Deficiencies Reported
Marine Inspection users report zero crew documentation deficiencies at PSC inspections. Auto-alerts prevent expired certificates from reaching a port call undetected.
Real-time
Fleet-Wide Crew Visibility
Superintendents see certificate status, rest hour compliance, and safe manning status across every vessel in the fleet simultaneously — from one dashboard.
Expert Perspective
"The most consistent pattern I observe across PSC inspections is the gap between vessels where the master can produce every crew certificate and the last 30 days of rest hour records in under two minutes, and vessels where the same process takes 45 minutes and reveals three violations no one knew existed. That gap is entirely a systems problem — not a crew quality problem. The vessels that pass cleanly aren't running more qualified seafarers; they're running better record-keeping systems. Digital crew management platforms have effectively eliminated the certificate-expired-undetected problem for the fleets that use them properly. The rest hour compliance issue is harder to solve manually because the violations often emerge from cumulative operational pressure that no one is tracking in real time — which is exactly what automated rest hour monitoring is designed to catch before the inspector does."
Maritime Crew Compliance & PSC Inspection Analysis
Port State Control Operations · Global Maritime Regulatory Review
Never Fail a PSC Inspection on Crew Documentation Again
Marine Inspection's crew compliance platform tracks STCW certificates, rest hour records, medical certificates, MLC documentation, and safe manning status for every crew member on every vessel — with automated expiry alerts and fleet-wide visibility that means no certificate ever reaches a port call expired.
Frequently Asked Questions
What is STCW and which vessels and seafarers does it apply to?
The International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) is an IMO convention that establishes minimum qualification standards for masters, officers, and watch personnel on seagoing merchant ships. It applies to seafarers serving on ships engaged on international voyages (with limited exceptions for fishing vessels, pleasure yachts, and certain government ships). Over 160 nations have ratified STCW, making its certificate requirements effectively universal on internationally trading vessels. The 2010 Manila Amendments introduced significant updates — particularly for Basic Safety Training revalidation and the addition of new endorsements — which are now fully in effect and actively checked by PSC inspectors worldwide.
What are the STCW rest hour requirements and how are they monitored during PSC inspections?
STCW Regulation VIII/1 requires a minimum of 10 hours rest in any 24-hour period and 77 hours in any 7-day period. Rest may be divided into no more than two periods, one of which must be at least 6 consecutive hours. PSC inspectors request rest hour records for all watchkeeping officers and ratings covering the preceding 30 days minimum. They manually calculate compliance for each crew member against both rules. Any violation — even a single day — constitutes a deficiency. Records must be signed by both the seafarer and the master. Inspectors are specifically trained to identify uniformly filled-in records (which suggest fabrication) and any pattern of exceptions that are not matched by documented compensatory rest arrangements.
What happens when a crew member's STCW certificate expires while the vessel is at sea?
An expired STCW certificate technically renders the seafarer unqualified to perform their designated function from the moment of expiry. In practice, most flag states and PSC regimes apply a grace period approach: if a vessel is at sea when a certificate expires and the seafarer has initiated revalidation, the situation is treated with some flexibility. However, if the vessel arrives in port with an expired certificate and no evidence of pending revalidation, it is treated as a deficiency. The critical difference is documentation — if you can show the revalidation is in progress (application submitted, training booked, sea service record provided to authority), most PSC regimes will issue a requirement to complete rather than a detention. Marine Inspection's 90/60/30-day alert system ensures revalidation is initiated well before expiry — eliminating this risk entirely.
What is an Endorsement of Recognition and when is it required?
An Endorsement of Recognition (EoR) is a document issued by a flag state that recognizes a certificate of competency issued by another country as meeting that flag state's requirements under STCW. Under STCW Regulation I/10, if a seafarer holds a certificate issued by Country A but is serving on a vessel flagged to Country B, Country B must issue an EoR confirming it recognizes Country A's certificate. The original certificate plus the EoR together constitute the complete documentation for PSC purposes. Serving without a valid EoR — even with a perfectly valid original CoC — is a deficiency. EoR validity is linked to the original certificate; if the CoC expires, the EoR becomes invalid. Fleet managers must track both documents simultaneously for any cross-flag crew arrangements.
How does MLC 2006 relate to STCW and what additional documentation does it require?
The Maritime Labour Convention 2006 and STCW are complementary frameworks — STCW governs professional competency and watchkeeping standards, while MLC 2006 governs seafarers' employment rights and working conditions. Both are checked during PSC inspections, often by the same inspector in the same visit. MLC-specific documentation requirements include: Seafarer Employment Agreements (SEAs) for every crew member on board, wage payment records for minimum 3 months, evidence of access to medical care and repatriation entitlement, Declaration of Maritime Labour Compliance (DMLC) Parts I and II, and the Maritime Labour Certificate (for vessels of 500 GT or above on international voyages). Failure on MLC documentation can result in detention independently of STCW compliance status — they are separate deficiency categories.
Can Marine Inspection's platform work offline for crew compliance tracking on vessels at sea?
Yes. Marine Inspection is built offline-first. All crew certificate records, rest hour tables, MLC documentation, and safe manning tracking are accessible and updatable fully without internet connectivity on board. Rest hour entries are GPS-timestamped at the point of entry and cannot be retroactively modified — which is critical because PSC inspectors are specifically trained to identify retrospectively completed rest hour records. When the vessel reaches port or regains satellite connectivity, all records auto-sync to the shore-based fleet dashboard. This means superintendents have visibility into crew compliance status across the fleet in near real time, and the master can produce a complete crew compliance package for any inspector within 60 seconds of the first request.
Ready to Make Crew Compliance Your Competitive Advantage?
Marine Inspection helps fleet managers and masters track STCW certification, rest hour compliance, MLC documentation, and safe manning status across every vessel and every crew change — with automated alerts, offline mobile access, and fleet-wide dashboards that turn crew compliance from a risk into a strength.
