OPITO, MIST, STCW: what do you really need?

The problem: too many certificates, unclear requirements

Search for offshore jobs and you'll encounter OPITO, MIST, STCW, GWO, HUET, FOET, CA-EBS, IRATA, and more. It looks like you need all of them. You don't.

Each framework exists for a different reason and covers different roles. Buying the wrong certs wastes hundreds of euros and delays your job search. This guide maps what each framework is for and what you actually need based on where you want to work.

OPITO — the oil and gas safety standard

OPITO is the industry body that sets safety training standards for the oil and gas sector. OPITO-accredited certificates are required on most fixed platforms, FPSOs, and oil and gas projects globally.

The key OPITO certificates for new entrants are:

• BOSIET — Basic Offshore Safety Induction and Emergency Training. The essential entry certificate. Cost: €600–€850. Valid 4 years.
• FOET — Further Offshore Emergency Training. The renewal of BOSIET after 4 years. Cost: €400–€580.
• MIST — Minimum Industry Safety Training. A 1-day online-only module accepted by UK operators alongside BOSIET. Cost: €45–€70.
• HUET — Helicopter Underwater Escape Training. This is a component inside BOSIET/FOET, not a separate certificate you buy independently.
• CA-EBS — Compressed Air Emergency Breathing System. Often included in BOSIET; sometimes sold as an add-on (€90–€170).

STCW — the maritime standard for vessel roles

STCW (Standards of Training, Certification and Watchkeeping) is an international maritime convention governed by the IMO. It applies to anyone working on commercial vessels — including crew transfer vessels (CTVs), supply ships (PSVs, AHTSs), and offshore support vessels.

If you're targeting vessel-based roles in offshore wind or marine logistics, STCW is your framework. The core modules for entry-level are:

• STCW Basic Safety Training — covers personal survival, fire prevention, first aid, and personal safety. Cost: €350–€580. Valid for re-validation every 5 years.
• STCW Proficiency in Survival Craft — required for officer-level vessel roles, not entry level.
• Medical First Aid (STCW) — required for some vessel crew roles.

GWO — the offshore wind standard

GWO (Global Wind Organisation) sets the training standards for the wind energy sector. If you're targeting offshore wind turbine technician roles, GWO Basic Safety Training (BST) is required — not OPITO.

GWO BST consists of five modules:

• Manual Handling — €80–€130 per module
• First Aid — €80–€130
• Fire Awareness — €80–€130
• Working at Heights — €80–€130
• Sea Survival — €80–€130
• Full GWO BST (all 5 modules): €350–€600 total, valid 2 years

Certificate stack by target role

This is the practical summary of what to buy based on your target sector:

• Oil & gas platform / FPSO → BOSIET + MIST + OGUK medical
• Offshore wind turbine technician → GWO BST + OGUK (or equivalent) medical
• Crew transfer vessel (CTV) deck crew → STCW Basic Safety + OGUK medical
• Supply vessel (PSV/AHTS) → STCW Basic Safety + OGUK medical
• Dredging / marine construction → STCW Basic Safety + role-specific certs
• Subsea ROV → BOSIET + MIST + electrical/mechanical qualifications

What operators actually check

When you submit your CV or get mobilised for a job, operators check three things:

• Your core safety certificate (BOSIET or GWO or STCW, depending on the role) — name, issuing body, and expiry date
• Your offshore medical — the issuing body and expiry date
• Any role-specific certs mentioned in the job description

What not to buy — common expensive mistakes

• OPITO Helideck Assistant or Emergency Response Team Leader — advanced certs for specific roles, not entry level
• IRATA rope access — only needed for inspection and maintenance roles working at height on structures
• CSWIP (welding/NDT inspection) — specialist inspection qualifications, not general offshore
• Offshore medic or paramedic courses — highly specialised, require prior medical background
• Buying both BOSIET and GWO if you're only targeting one sector — pick your sector first

Tracking your certificate expiry dates

Once you have certificates, expiry management becomes a practical career task. Letting a certificate expire loses you mobilisation opportunities — operators cannot send you offshore without valid certs.

A simple system that works:

• Record each certificate name, issuing body, issue date, and expiry date in one place
• Set renewal reminders 3 months before expiry — enough time to book a course without panic
• Keep physical and digital copies of every certificate
• Inform your agency whenever you renew — they often hold your cert records too