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Cert Guide

STCW Basic Safety Training, explained

Standards of Training, Certification and Watchkeeping — the International Maritime Organization (IMO) baseline qualification every seafarer needs to work on a vessel trading internationally. Four mandatory modules; flag-state issued; refreshed every five years.

Issuer
IMO / flag state
Validity
5 years
Duration
5–7 days
Modules
4 mandatory

If BOSIET is the offshore worker's ticket to the rig, STCW is the seafarer's ticket to the ship. Every crew member on a vessel trading internationally — from the cook to the master — holds STCW Basic Safety Training. It is the most ubiquitous maritime qualification on earth.

What STCW is, and why it exists

STCW is shorthand for the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers — an IMO convention first adopted in 1978 and substantially amended at Manila in 2010 and at subsequent intervals. Before STCW, every flag state had its own seafarer-qualification system, and a UK Master's ticket meant something very different from an Indian or Filipino one. STCW set a global baseline: any seafarer who holds a valid STCW endorsement from any IMO flag state has met the same minimum standard.

STCW Basic Safety Training is the entry point. Every seafarer — from a deck cadet to a fleet captain — completes the same four modules before they can sign on to a vessel. Officers and ratings then layer specialised STCW endorsements on top (watchkeeping, advanced firefighting, GMDSS, tanker, passenger-ship operations, and so on). The basic training is the foundation everyone shares.

The 2010 Manila amendments brought the most consequential update in decades: every Basic Safety Training certificate now requires refresher training every five years. Before Manila, the basic training was effectively lifetime — once you had it, you had it. The 5-year cycle reflects the reality that skills like CPR, firefighting drills, and survival-craft handling decay rapidly without practice.

The four mandatory modules

M1

Personal Survival Techniques (PST)

STCW A-VI/1-1

Survival craft use, life jackets, immersion suits, abandon-ship procedures, sea survival skills. Pool-based practical with launching and boarding survival craft.

M2

Fire Prevention and Fire Fighting (FPFF)

STCW A-VI/1-2

Classification of fires, portable and fixed firefighting systems, breathing apparatus, smoke-filled compartment drills, ship firefighting strategies.

M3

Elementary First Aid (EFA)

STCW A-VI/1-3

Primary survey, CPR, treatment of bleeding, burns, fractures, hypothermia, casualty handling at sea.

M4

Personal Safety and Social Responsibilities (PSSR)

STCW A-VI/1-4

Shipboard organisation, emergency procedures, pollution prevention, effective communication on board, fatigue management.

Combined, the four modules typically take 5–7 days of training, depending on whether they are delivered as a combined Basic Safety Training package or as four separate courses. Most approved training centres deliver them as a single package.

Revalidation vs Refresher — which one do you need?

Both terms describe the 5-year renewal cycle, but they are different pathways and the criterion that decides which one applies is your sea service in the past five years.

STCW Revalidation

For active seafarers with ≥360 days of qualifying sea service in the past 5 years.

  • ·Shorter course — typically 2–3 days
  • ·Focused on updating, not re-drilling
  • ·Sea-service record is the qualifying evidence

STCW Refresher

For mariners with <360 days qualifying sea service in the past 5 years (including returning seafarers).

  • ·Longer course — re-runs the full Basic Safety Training
  • ·Pool work, firefighting drills, CPR all repeated
  • ·Standard pathway for shore-based seafarers returning to sea

Some individual STCW endorsements (Advanced Fire Fighting, Medical First Aid, GMDSS) have their own renewal cycles separate from Basic Safety Training. The 5-year cycle described here applies to the four-module Basic Safety Training; specialised endorsements follow their own STCW table.

Who needs STCW Basic Safety Training

Every seafarer on a vessel trading internationally. This is one of the broadest applicability rules in any compliance regime — there is no “seafarer category” that's exempt. From the most senior officer to the newest galley assistant, everyone holds Basic Safety Training.

Deck Officer (OOW, Chief Mate, Master)Engineer OfficerBosunAble Seaman / DeckhandWiper / Oiler / MotormanCook / StewardCruise Ship Hotel StaffCruise Ship Entertainment CrewDP OperatorMarine PilotFPSO CrewDrill-Ship Marine CrewYacht Crew (commercial)Tug Crew

Flag-state issuers

STCW certificates are issued by the maritime authority of an IMO flag state. The most common ones for English-speaking seafarers:

United Kingdom

MCA — Maritime and Coastguard Agency

Australia

AMSA — Australian Maritime Safety Authority

United States

USCG — US Coast Guard

Norway

NMA — Norwegian Maritime Authority

Marshall Islands

MISMR — Maritime Administrator

Liberia

LISCR — Liberian International Ship & Corporate Registry

Panama

AMP — Panama Maritime Authority

Bahamas

BMA — Bahamas Maritime Authority

To serve on a vessel flying a different flag than your STCW certificate, you need a Flag Endorsement (also called Certificate of Recognition) from that flag state. Common example: a UK-issued CoC holder serving on a Marshall Islands-flagged vessel needs a Marshall Islands flag endorsement on top of the UK certificate.

Find an approved STCW training centre

STCW training is delivered by maritime training providers approved by an IMO flag state. The approving authority is the flag state of the certificate you intend to hold — most seafarers train through providers approved by their issuing flag state, and the major training centres typically hold approvals from multiple flag states.

Official directory
MCA (UK) — approved STCW training providers →

Maritime and Coastguard Agency list of UK-approved training providers for STCW Basic Safety Training.

Official directory
AMSA (Australia) — approved seafarer training →

Australian Maritime Safety Authority directory of approved STCW training providers.

Official directory
USCG (USA) — approved courses →

US Coast Guard National Maritime Center list of USCG-approved STCW courses and providers.

Major providers

Major maritime training centres with multi-flag-state approvals — well-established names in the global STCW market:

  • Warsash Maritime School (Solent University) — UK; one of the historic centres of maritime education, MCA-approved.
  • Maine Maritime Academy — CPMD — USA; USCG-approved STCW programs.
  • MITAGS (Maritime Institute of Technology and Graduate Studies) — USA; major STCW provider on the East Coast and Pacific.
  • Stream Marine Training — UK; MCA-approved STCW programs.
  • Fleetwood Nautical Campus — UK; MCA-approved, multi-flag-state recognition.
  • FMTC Safety — Netherlands; STCW + offshore programs.
  • Maersk Training — Multi-region; STCW + tanker + offshore endorsements.

Training hubs by region

Southampton, UK

Warsash Maritime School — historic UK maritime training centre.

Baltimore, USA

MITAGS and Maine Maritime — major US STCW hub.

Sydney, Australia

AMSA-approved providers; AMC (Australian Maritime College) at Launceston.

Manila, Philippines

Major source-country for global maritime crew; many MARINA-approved STCW centres.

Mumbai, India

DG Shipping-approved centres for Indian seafarers.

Glasgow, UK

Stream Marine Training and other MCA-approved centres.

Provider list reflects established long-standing centres as of May 2026 and is not exhaustive. Many other accredited providers exist worldwide. Always verify current accreditation status via the official directory above before booking. CertVault is not affiliated with any listed provider.

Frequently asked questions

What is STCW?↓
STCW is the International Maritime Organization (IMO) convention on Standards of Training, Certification and Watchkeeping for seafarers. The convention sets the minimum qualification standards every seafarer on an internationally-trading vessel must hold. STCW Basic Safety Training is the entry-level requirement — four short modules covering personal survival, fire prevention, first aid, and personal safety. Additional STCW endorsements are required for watchkeeping officers, ratings, and specific vessel types (tankers, passenger ships).
What are the four modules in STCW Basic Safety Training?↓
The four mandatory STCW Basic Safety Training modules are: (1) Personal Survival Techniques (PST) — STCW A-VI/1-1: covering survival craft, immersion suits, sea survival and abandon-ship procedures; (2) Fire Prevention and Fire Fighting (FPFF) — STCW A-VI/1-2: covering fire classes, extinguishers, breathing apparatus, and shipboard firefighting; (3) Elementary First Aid (EFA) — STCW A-VI/1-3: covering primary survey, CPR, bleeding control, and casualty management; (4) Personal Safety and Social Responsibilities (PSSR) — STCW A-VI/1-4: covering shipboard organisation, emergency procedures, pollution prevention, and effective communication.
How long is STCW Basic Safety Training valid?↓
STCW Basic Safety Training certificates are valid for five years. Since the STCW 2010 Manila amendments (which took effect 31 December 2016), every Basic Safety Training certificate must be refreshed every five years. Some individual STCW endorsements — notably Advanced Fire Fighting and Medical First Aid — have their own renewal requirements that are separate from the Basic Safety Training cycle.
What is the difference between STCW Refresher and STCW Revalidation?↓
They are two different renewal pathways depending on your sea service in the past five years. STCW Revalidation applies to mariners who have accumulated 360 or more days of qualifying sea service within the past five years — they are active seafarers who practise the relevant procedures regularly, so the renewal course is shorter and focused on updating. STCW Refresher applies to mariners with fewer than 360 days of qualifying sea service in the past five years (or who have been away from shipboard operations for an extended period). Refresher is longer and re-drills the full Basic Safety Training competencies.
Who issues STCW certificates?↓
STCW certificates are issued by national maritime authorities of IMO member states — flag states. Examples: the MCA (Maritime and Coastguard Agency) in the UK, AMSA (Australian Maritime Safety Authority) in Australia, the USCG (US Coast Guard) in the United States, and NMA (Norwegian Maritime Authority) in Norway. The training itself is delivered by approved providers, but the certificate is endorsed by the flag state under the IMO convention. To serve on a vessel flying a different flag than your certificate, you also need a Flag Endorsement or Certificate of Recognition from that flag state.
Do I need STCW to work on cruise ships?↓
Yes. Every cruise-ship crew member needs at minimum STCW Basic Safety Training. Some roles require additional STCW endorsements: hotel and catering staff typically need Crowd Management and Crisis Management training (STCW A-V/2); officers need watchkeeping certificates and Advanced Fire Fighting; medical staff need Medical Person In Charge endorsements. The cruise industry follows the IMO STCW framework as the baseline for every position on board.
What is changing in STCW in 2026?↓
STCW amendments take effect on 1 January 2026 covering updates to several competence requirements and reflecting evolving maritime operations (including changes related to digital navigation systems, cyber awareness in some flag states' implementations, and clarifications to existing watchkeeping standards). Specific changes vary by flag state implementation. Seafarers with certificates issued before 2026 should check with their flag-state authority whether their current credentials remain valid or require updating. Always confirm with your issuing flag state before assuming compliance.
Is STCW the same as BOSIET?↓
No — they are different qualifications for different work environments. STCW is the maritime baseline for crew on vessels trading internationally. BOSIET is the OPITO offshore-installation qualification for personnel travelling by helicopter to fixed or floating oil and gas platforms. Some workers hold both — for example, marine crew on offshore vessels (FPSOs, drill ships, supply vessels) often need STCW for the maritime role and BOSIET if they also work on offshore installations. The two qualifications complement rather than replace each other.

Related certifications

BOSIET — offshore equivalent

For offshore-installation workers (rather than vessel crew). Some workers hold both.

HUET — helicopter escape

For seafarers on offshore-support vessels who also fly by helicopter.

Maritime industry guide

STCW, CoC, Flag Endorsements, GMDSS, DP — full maritime cert reference.

IMO official site →

International Maritime Organization — convention text, amendments, flag-state contacts.

Track STCW expiry across your seafarer credentials

CertVault stores STCW, Certificate of Competency, Flag Endorsements, DP, GMDSS, ENG1 medical and every other seafarer document — and alerts you 60 days before refresher training is due. Free forever for workers.

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This guide is based on publicly available IMO STCW convention documentation and flag-state authority guidance as of May 2026. Always verify current requirements with your flag-state maritime authority.