STCW superyacht:
crew certificates, training and certification in 2026

STCW at a glance

The International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW 1978) is one of the founding instruments of international maritime law. Adopted by the International Maritime Organization (IMO) in 1978 and entered into force in 1984, it was deeply overhauled by the 1995 amendments and then by the Manila Amendments of 2010, which came into force on 1 January 2012 with a transitional period running to 1 January 2017.

STCW is one of the three historic pillars of international maritime law, alongside SOLAS (safety of life at sea) and MARPOL (prevention of pollution); the more recent MLC 2006 is often described as the “fourth pillar”. Where SOLAS governs the ship and MARPOL its environmental footprint, STCW governs the men and women who operate the ship: who may keep a watch, take command, run the machinery, and to what verified training standards.

The convention’s aim is to establish a uniform global baseline of competence so that a certificate issued in one country means the same thing everywhere, and so that a master, officer or rating can be employed on a ship of another flag without compromising safety. It is this logic of mutual recognition that makes the international maritime labour market possible — and, by extension, the superyacht crew market, by nature multinational and mobile.

For yachting, STCW is not optional: any yacht trading internationally under the flag of a State party to the convention must be operated by a crew certificated in line with its requirements and with the Minimum Safe Manning Document issued by the flag. The contrast with the MLC is sharp: whereas the MLC’s application to private yachts remains a grey area managed flag by flag, STCW applies as soon as there are seafarers on board — whether they serve an owner or charter guests.

STCW and yachting: why it shapes life on board

On a superyacht, STCW is less a one-off audit topic than a permanent thread running through crew life. Every recruitment, every promotion, every embarkation requires checking that the person holds the certificates and training matching their role and the vessel’s tonnage. A junior steward must already hold their Basic Safety Training; a first officer aims for a yacht-coded Chief Mate certificate; a chief engineer must hold an engineering certificate suited to the propulsion power.

The yacht route has a particular feature: under the aegis of the British MCA in particular, it has developed specific certificates calibrated to superyacht realities — moderate tonnages (often under 3000 GT), small crews, mixed leisure/charter operation. These “yacht-coded” certificates dovetail with the classic merchant-navy certificates while remaining recognised under STCW. This is what lets a yacht master build a coherent career, from a first embarkation through to command of vessels of several thousand tons.

For the owner and the ship manager, the stakes are twofold: compliance (the vessel can only operate with a properly certificated crew recognised under its flag) and continuity (certificates, medicals and endorsements expire on different dates, and a single lapsed document can ground a critical role). Managing the crew competence matrix is, in practice, one of the most time-consuming and sensitive tasks in operating a yacht.

Architecture of the convention: Annex and Code (Parts A and B)

STCW is made up of three layers of text, whose hierarchy determines the mandatory or advisory character of each requirement:

• The Articles of the convention: general provisions and obligations of States party (recognition, communication to the IMO, control).
• The Annex (regulations): organised in chapters, it sets out the certification and watchkeeping requirements by function and department.
• The STCW Code, in two parts:
  • Part A — mandatory: detailed minimum competence standards, expressed as tables (columns: competence, knowledge, methods of demonstration, evaluation criteria).
  • Part B — recommended: guidance and good practice to help apply the convention, with no binding force.

The Annex is structured in eight chapters:

For a superyacht, chapters II, III, VI and VIII carry most of the day-to-day obligations. Chapter I governs in the background the machinery of certificate recognition — it is the chapter that makes the crew’s credentials operable, or not, under a given flag.

CoC, CoP and endorsements: mapping the credentials

Three categories of document structure a seafarer’s certification. Confusing them is a frequent source of error in crew management.

The Certificate of Competency (CoC) — competence certificate. This is the credential that authorises a position of responsibility: officer of the watch, chief mate, master, engineer, chief engineer. It attests to an assessed level of competence (examinations, orals, sea time) and is capped by function, tonnage and propulsion power. It is the “career” certificate.

The Certificate of Proficiency (CoP) — proficiency certificate. It attests to specific training rather than a command function: Basic Safety Training, survival craft handling, security, ECDIS, advanced firefighting, medical care on board. A seafarer accumulates several CoPs over a career.

The endorsement — visa. There are two distinct meanings:

• The endorsement attesting the issue of a CoC (the issuing State applies its visa to the certificate).
• The flag State endorsement (or Certificate of Recognition, CoR), by which another State — the yacht’s flag State — recognises a foreign certificate under Regulation I/10. This is the document that makes a British certificate operable on a Cayman yacht.

This distinction is central in yachting, where it is common for crew certificated in the United Kingdom, France or the Netherlands to serve under a Cayman, Marshall or Maltese flag. For each crew member in a regulated role, the ship manager must ensure that the chain CoC → flag endorsement → valid medical is complete and consistent over time. A break in that chain — a lapsed endorsement, an expired medical — is enough to render the role non-compliant, even if the underlying certificate remains valid.

Yacht certificates: the MCA route and equivalences

The most structured certification route for superyachts is that of the MCA (Maritime and Coastguard Agency, United Kingdom), which has become the market’s de facto reference. It offers “yacht-coded” certificates calibrated to the tonnages and operating modes typical of the sector. The table below gives a simplified view — the exact titles and thresholds evolve and must always be verified at source with the MCA.

Two practical points deserve attention:

• The RYA Yachtmaster as an entry point. The RYA Yachtmaster Offshore/Ocean, with a commercial endorsement, opens access to first commands of small commercial units and acts as a bridge towards the MCA Master <200 GT. It is not, however, a full STCW certificate: it must be converted through additional modules and documented sea time.
• Progression by tonnage and power. A master does not only “climb” in responsibility but in tonnage: moving from <500 GT to <3000 GT, then crossing the 3000 GT threshold towards the unlimited merchant-navy certificates, requires additional sea time, training and examinations each time.

Other flags and administrations (France, the Netherlands, the Marshall Islands) issue or recognise equivalent certificates. The consistency of the competence matrix with the yacht flag’s Minimum Safe Manning Document is what ultimately determines whether the vessel can lawfully put to sea.

The French route: from CMP to Capitaine illimité

The MCA route is not the only professional path. France has its own certificate system, issued by the maritime administration (Affaires Maritimes / DGAMPA) and taught notably at the ENSM and the maritime vocational colleges. This route is fully STCW-compliant and especially relevant for French-resident seafarers, for yachts under the French flag (RIF), and for crews who want a recognised career without going through the United Kingdom. Tonnages are expressed in UMS (Universal Measurement System), the equivalent of gross tonnage (GT).

The CMP (Certificat de matelot pont) is the way in: it attests the basic competence of a deckhand — safety, manoeuvring, maintenance, participation in navigation — and allows a first professional embarkation. The candidate must then accumulate sea time (of the order of 6 months after the CMP) to access the Capitaine 200 training.

The Capitaine 200 yacht opens the first paid command, on small units in coastal navigation. The candidate then progresses to Chef de quart 500 (officer of the watch) and then Capitaine 500 (command of units under 500 UMS, in “all waters” navigation), each step requiring further sea time and training, validated on a vessel manned under a crew list.

The OCQP (Officier chef de quart passerelle) is the pivot of the system: it is the merchant-navy officer-of-the-watch certificate in the STCW II/1 sense, on vessels of unlimited tonnage. It is the true bridge towards large yachts and command with no tonnage limit. The route continues with Capitaine 3000 yacht (command under 3000 UMS, continuous training at the ENSM Marseille, open to holders of the Capitaine 500 yacht or via the OCQP route), and then Capitaine illimité — the Capitaine 1ère classe de la navigation maritime — which authorises command of any vessel, with no tonnage cap.

Two logics therefore converge: the “yacht-coded” certificates (Capitaine 200/500/3000), calibrated to superyacht realities, and the merchant-navy officer route (OCQP, Capitaine illimité), unavoidable above 3000 UMS or for unrestricted worldwide navigation.

The key point to take from the table: in France, the diploma (obtained at the end of training) and the certificate (which actually authorises the role) are separated by sea time still to be completed. You can hold the Capitaine 500 diploma without holding the certificate as long as the required months of bridge service are not validated — a nuance many young officers discover too late. The durations shown are set by the issuing orders (Capitaine 200: order of 20 August 2015; Chef de quart 500 and Capitaine 500: order of 30 October 2015; Capitaine 3000: order of 18 April 2016; OCQP: order of 22 December 2015); they may change and must always be verified at source (DGAMPA, ENSM) before building a career plan.

Sea time and sea days: how a certificate is validated

Sea time is the real bottleneck of a career on board: without validated sea days, no certificate is issued or revalidated, whatever the level of theoretical training attained. Two counting systems coexist in yachting — the MCA’s and the French Affaires Maritimes’ — and they do not count days the same way. Understanding this mechanism is essential for the seafarer building a career and for the owner who wants to offer their crew a path forward.

MCA-side: days, categories and external verification. The MCA distinguishes several types of service, which do not carry the same weight in a file:

• Onboard / Yacht Service — time signed on board, whatever the yacht’s activity.
• Actual Sea Service — time genuinely at sea; a minimum of 4 hours of duty in 24 counts as 1 day, capped at 1 day per 24-hour period. Time at anchor only counts if it is temporary and associated with a passage (waiting for a berth, weather); it stops counting once the voyage is concluded.
• Watchkeeping Service — actual service as the officer in charge of the bridge watch, at least 4 hours in 24.
• Stand-by service — preparing the vessel after a voyage: at most 14 consecutive days, not exceeding the length of the previous voyage.
• Yard service — time in the yard (build, refit): capped at 90 days.

As an indication (the exact thresholds fall under the MCA MSN/MGN in force), the OOW (Yachts) <3000 GT requires of the order of 365 days, including a substantial minimum of actual sea service; the Master <500 GT adds about 120 watchkeeping days after the OOW; the Master <3000 GT about 240 days. The decisive point: the MCA requires Sea Service Testimonials to be verified by the PYA or Nautilus. An unverified testimonial delays issue of the Notice of Eligibility by months — a classic trap for seafarers who neglect traceability.

French-side: months of navigation, the crew list, the administration. The French system works in months of navigation validated by the administration from the crew list (rôle d’équipage) and the seafarer’s professional record book. Indicative examples: of the order of 6 months of actual navigation after the CMP to enter Capitaine 200 training, around 12 months for the certificate itself (reducible in certain equivalence cases); the OCQP additionally requires a period of navigation as a cadet officer after the course. Here, it is the official embarkation (entry on the crew list) that counts, and it is the administration — not a third party — that validates the sea time.

Moving from one system to the other. For a master aiming at an international career, the recurring question is the conversion of yacht sea time towards the unlimited certificates of the merchant navy. The MCA frames this recognition through dedicated guidance (use of yacht sea service towards “unlimited” applications), with capping and conversion rules. On the French side, yacht navigation is taken into account towards Capitaine 3000 and then the unlimited certificate, but the administration distinguishes the nature of the navigation performed. The golden rule, in both systems, is identical: document from day one — daily logs, service testimonials signed by the master, strict consistency with the crew list and the record book. Untracked sea time is lost sea time, sometimes impossible to reconstruct years later.

For the owner and the ship manager, these counts are not just a matter of individual careers. They determine the yacht’s ability to offer its crew a path forward — and thus to retain them — and to present, at every embarkation and every audit, certificates consistent with the Minimum Safe Manning Document. Keeping the crew’s sea-time testimonials up to date is, at Cursorio, part of routine crew documentation: a service rendered as much to the seafarer as to the owner.

STCW Basic Safety Training and refreshers

Every seafarer serving on board — from the master to the most junior crew member — must hold Basic Safety Training (BST), the safety baseline defined by Regulation VI/1. It comprises four modules:

• Personal Survival Techniques (PST) — survival at sea (abandonment, liferafts, immersion).
• Fire Prevention and Fire Fighting (FPFF) — fire prevention and firefighting.
• Elementary First Aid (EFA) — elementary first aid.
• Personal Safety and Social Responsibilities (PSSR) — occupational safety and social responsibilities on board.

No professional embarkation is possible without these four modules. On a superyacht they are systematically required at recruitment, including for interior roles (chef, steward, stewardess) who are fully part of the vessel’s safety crew.

The Manila Amendments introduced a key requirement: a 5-yearly refresher of the PST and FPFF modules, as well as of Proficiency in Survival Craft and Rescue Boats (PSCRB) and Advanced Fire Fighting (AFF) for those who hold them. The EFA and PSSR modules are not subject to a mandatory regulatory refresher, but many flags and companies require a periodic update as a precaution.

Beyond BST, several specialised courses punctuate progression:

• Advanced Fire Fighting and Medical First Aid / Medical Care for supervisory roles.
• Proficiency in Survival Craft and Rescue Boats (PSCRB), and Fast Rescue Boats on some units.
• ECDIS (electronic chart display and information system) for bridge officers.
• Operational/Management level: Bridge Resource Management (BRM) and Engine Resource Management (ERM), leadership and teamwork modules — made mandatory at operational and management levels since Manila.

Planning these courses — centre availability, cost, the seafarer’s time off — is a logistical matter in its own right, best anticipated several months ahead, especially between seasons.

Security: STCW Chapter VI and the ISPS link

The security strand of STCW dovetails closely with the ISPS Code (International Ship and Port Facility Security). Three levels of training exist depending on the seafarer’s role:

• Security Awareness Training (Regulation VI/6) — security awareness, mandatory for every crew member. It is the minimum baseline: recognising a threat, understanding security levels, knowing how to react.
• Designated Security Duties — for seafarers with security tasks assigned under the Ship Security Plan.
• Ship Security Officer (SSO) — the ship’s security officer, counterpart to the shore-based Company Security Officer and responsible for implementing the security plan.

On a superyacht, even a private one, the security dimension is real: protecting the owner and guests, controlling access to the quay and gangway, managing contractors, security at sensitive port calls. Consistency between the crew’s STCW security training and the vessel’s ISPS arrangements (where they apply) is a point the ship management must hold, working with the designated Company Security Officer.

Rest hours and fitness for duty (Chapter VIII)

Chapter VIII of STCW deals with fitness for duty and the organisation of watchkeeping. Its core — the rest hours — is deliberately aligned with the MLC 2006, which spares the crew having to juggle two contradictory frameworks:

• A minimum of 10 hours of 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 is at least 6 consecutive hours, with no more than 14 hours between two periods of rest.

Chapter VIII also covers fatigue management, fitness for duty and the provisions on drugs and alcohol: blood alcohol limits for watchkeeping personnel, prevention policy. On yachts, the seasonal peaks — owner cruising, intensive charter, ocean transit with a small crew — test the rest thresholds hard, exactly as for the MLC. The Work and Rest Hours records are common to both regimes and are among the most scrutinised documents in audits and Port State Control alike.

Three good practices limit the risk: daily (not retrospective) entry of hours, the use of relief crew in high season, and a monthly review of the records by the master with formalised corrective action. For more on rest hours and crew payroll, see our MLC 2006 superyacht guide.

Revalidation, sea time and medical certificate

An STCW certificate is not held for life: it must be revalidated periodically to stay operable. The arrangements fall to the State that issued the certificate, but the general logic is constant:

• Revalidation of CoCs (command and watchkeeping): generally every 5 years, on proof of continued medical fitness and recent sea time (typically 12 months of service within the 5 years, or alternative routes — training, a qualifying shore role — defined by the flag).
• Refresher of safety CoPs: every 5 years for survival, firefighting and survival craft (see above).
• Medical certificate (Regulation I/9): the seafarer must hold a valid maritime medical, issued by an approved doctor. The yachting reference standard is the British ENG1, valid for 2 years (1 year for those under 18). Without a valid medical, neither the certificate nor the endorsement is operable.

The practical difficulty lies in the desynchronisation of expiry dates: the CoC, the flag endorsement, the medical and each CoP have their own dates. A critical role can become non-compliant overnight through the expiry of a medical alone, even though the underlying certificate remains valid for years. This is precisely why a centralised competence matrix, with early alerts, is one of the basic tools of serious ship management.

Manning, flag and certificate recognition

STCW says not only who may do what but also how many certificated people the ship must carry. That number is set by the Minimum Safe Manning Document, issued by the flag State according to the yacht’s tonnage, trading area, automation and operating programme. Sailing below this minimum, or with a crew whose certificates do not cover the required functions, is a major non-conformity.

The recognition of foreign certificates (Regulation I/10) is the mechanism that allows an international crew to serve under a given flag. Two notions attach to it:

• The IMO White List: the list of States party that have demonstrated they give full effect to STCW. A certificate issued by a White List country is recognised more readily; conversely, a credential issued outside the White List meets obstacles. For yachting, this steers the choice of certifying countries and training centres towards established jurisdictions.
• The recognition agreement between the flag State and the issuing State: a prerequisite for issuing the flag State endorsement.

For a Cayman yacht crewed by a British master and a Dutch chief engineer, for instance, the ship manager must verify that the Cayman flag recognises UK and NL certificates, obtain the corresponding endorsements, and track their renewals. This is recurring work, invisible when done well and immediately blocking when it is not.

Audits and Port State Control on certificates

STCW compliance is verified at two levels, as with the other conventions:

• The flag State ensures, on issue and renewal of the Minimum Safe Manning Document and the endorsements, that the intended crew meets the requirements. Recognised Organisations (ROs) take part in these checks within the framework of safety management system (ISM) audits.
• The port State (Port State Control, PSC) checks, at port calls, the validity and consistency of the certificates, medicals and endorsements of the crew on board, as well as compliance with the Minimum Safe Manning Document and the rest hours.

Typical STCW non-conformities found by PSC on yachts: a lapsed certificate or endorsement, an expired medical, a regulated role held by a seafarer not certificated for the tonnage, manning below the safe manning document, missing or manifestly falsified rest-hour records. Depending on severity, PSC issues an observation, a deficiency to correct within a deadline, or — for a major non-conformity affecting the safety of the manning — may detain the vessel until it is rectified. A detention is recorded in public databases (such as Equasis) and weighs on the reputation of the flag and the owner.

The 2024-2027 comprehensive review and yacht impact

Through its HTW Sub-Committee (Human Element, Training and Watchkeeping), the IMO has launched a comprehensive review of the STCW convention and Code. Begun in the 2022-2024 period, this overhaul is the most ambitious since Manila and should produce its first texts towards the end of the decade. Several strands will have a concrete impact on yachting:

• Digitalisation of certificates and records. Greater recognition of electronic certificates (e-certificates) and digital rest-hour records, provided their integrity is guaranteed (time-stamping, traceability, online verification by authorities). This simplifies audits but shifts the risk towards data security.
• Alternative fuels and new technologies. Rising training requirements linked to low-carbon fuels (methanol, ammonia, hydrogen, LNG via the IGF Code), electrification and hybrid systems — topics increasingly present on next-generation superyachts.
• Autonomous ships (MASS) and automation. Reflection on the competences required as automation advances — still prospective for yachts, but structuring in the long term.
• Wellbeing, the human element and fatigue. Strengthening of provisions on fatigue, mental health and the human element, in step with the parallel evolution of the MLC.

Beyond the texts, the underlying trend is towards convergence of STCW / MLC / ISM / ISPS within an integrated ship management system: the same rest-hour records, the same documentary-matrix logic, the same audit cycles. For a yacht, this reduces duplication but calls for a coherent overhaul of manuals and procedures.

For Cursorio, these developments confirm the value of outsourced crew-certification monitoring: keeping certificates, endorsements, medicals, refreshers and the safe manning document up to date is continuous, deadline-heavy work that often exceeds the bandwidth of a master at sea or a generalist family office. For the “working conditions” counterpart of certification, see our MLC 2006 superyacht guide.