How long does the full cadet-to-OOW pathway take?

Typically 3–5 years from starting a maritime academy or cadetship programme: 2–3 years of college study, 12 months of supervised sea time, and flag-state examinations. Some flags (India, Philippines) require a 4-year degree including the sea phase. The UK MCA two-phase system can be completed in around 3 years if sea-time berths are secured promptly.

Can I count sea time as an AB towards the OOW certificate?

Yes — STCW Regulation II/1.2 explicitly provides that 36 months of sea service as a rating forming part of a navigational watch can substitute for the 12 months of supervised cadetship sea time. Flag states implement this differently; the Philippines MARINA upgrading pathway and UK MCA's conversion route both recognise substantial AB sea time.

Is ECDIS mandatory for OOW certification?

ECDIS competence has been a mandatory Table A-II/1 competency since the 2010 Manila Amendments. Flag states require evidence of ECDIS training, either a type-approved course on a generic or type-specific system, plus simulator assessment. Some flag states accept in-company familiarisation records; others require an accredited classroom course.

What is BRM and is it mandatory?

Bridge Resource Management (BRM) is the leadership and teamwork component of STCW A-II/1. It is mandatory for OOW certification under the Manila 2010 amendments — it appears as HELM (Human Element, Leadership and Management) at the operational level in many flag-state training lists. Simulator-based assessment is the norm.

What tonnage does the OOW II/1 certificate cover?

STCW II/1 can be endorsed for ships of 500 GT or more (OOW Unlimited), or for ships under 500 GT on near-coastal voyages (OOW Near-Coastal under STCW II/3). The unlimited endorsement is the industry-standard qualification for deep-sea trading vessels; near-coastal is used in coastal and domestic trades. Flag states set the tonnage brackets.

Deck cadet to Officer of the Watch (OOW)

The Officer of the Watch (OOW) is the first command-level rank in the deck department. An OOW holds a Certificate of Competency under STCW Regulation II/1 and stands a solo navigational watch — typically a 4-hour bridge watch on a 4-on / 8-off rotation — on vessels of 500 GT or more. Entry is via a maritime academy cadetship programme (18–22 years typical entry age) or, for candidates with substantial AB sea time, through an upgrading pathway. The pathway demands strong mathematical, navigational, and situational-awareness skills; aspiring cadets should expect to study stability, meteorology, celestial and electronic navigation, cargo work, and STCW survival skills before sitting the flag-state examination.

The qualifications — STCW Table A-II/1

STCW Table A-II/1 lists the mandatory minimum competencies for an OOW on ships of 500 GT or more. Flag-state examinations test against these columns. The required certificates are:

Basic Safety Training (BST) — STCW A-VI/1. All four modules (PST, FPFF, EFA, PSSR) completed before any sea time counts. Refresher every 5 years for PST and FPFF.
Advanced Fire Fighting (AFF) — STCW A-VI/3. Required of all deck officers; typically taken during cadetship or before first OOW appointment.
Proficiency in Survival Craft and Rescue Boats (PSCRB) — STCW A-VI/2-1. Lifeboat commander's qualification — required for OOW certification. Practical refresher every 5 years.
Medical First Aid — STCW A-VI/4-1. Designated first-aid officer qualification; required before independent watchkeeping on most flags.
GMDSS General Operator's Certificate (GOC) — STCW Chapter IV. Mandatory for all OOWs on ships fitted with GMDSS installations (Sea Areas A1–A4). Covers DSC, EPIRB, SART, MF/HF/VHF, NAVTEX, SafetyNET.
ECDIS Operator — STCW A-II/1 competency (Manila 2010). Type-generic or type-specific course at a flag-approved training centre. Required for appointment to any ship that uses ECDIS as the primary means of navigation.
Radar / ARPA Operational — STCW A-II/1. Radar plotting and ARPA operation at the operational level. Simulator-assessed.
Bridge Resource Management (BRM / HELM Operational) — STCW A-II/1 leadership & teamwork. Human Element, Leadership and Management (HELM) at the operational level; simulator-based.
Security awareness — STCW A-VI/6-1. Required of all seafarers since Manila 2010.

Sea time required

STCW Regulation II/1.2 requires a minimum of 12 months of approved sea service as part of an approved seagoing service programme (cadetship), during which the competencies in Table A-II/1 must be demonstrated. Alternatively, 36 months of sea service forming part of a navigational watch (as a qualified rating) may be accepted by some flag states in lieu of the 12-month structured cadetship. Typical timing under a maritime academy pathway:

· Pre-sea college phase: 12–24 months (theory, simulators, BST, AFF)
· Sea phase / cadetship: 12–18 months on-board supervised training
· Post-sea college and examination: 3–6 months
· Total from cadetship entry to first OOW CoC: 3–5 years (flag-state dependent)

Training routes by country

Philippines (MARINA)
4-year Bachelor of Science in Marine Transportation (BSMT) at a MARINA-accredited MHEI, including a mandatory 1-year shipboard cadetship. MARINA administers the Licensure Examination for Officers of Vessel (LEOV) for OOW (II/1). Flag-state-specific — verify with marina.gov.ph.
India (DG Shipping)
B.Sc. Nautical Science (3 years pre-sea + 18-month cadetship) or B.Tech. Marine Engineering equivalent. DG Shipping Phase 2 written examination and Phase 3 oral examination for OOW Class IV CoC (equivalent to STCW II/1). Flag-state-specific — verify with dgshipping.gov.in.
Ukraine (Maradmin)
Odessa National Maritime University (ONMU) and other accredited academies offer 4-year nautical programmes including cadetship sea time. State qualifying examinations for OOW CoC. War-era disruptions affect document issuance and some academy operations. Flag-state-specific — verify with the Ukrainian Maritime Administration.
United Kingdom (UK MCA)
Phase 1 college (pre-sea) → 12 months sea time as deck cadet → Phase 2 college → MCA oral examination with an MCA-appointed examiner for OOW (Unlimited). Total programme typically 3 years. Flag-state-specific — verify with gov.uk/MCA.
Norway (Sjøfartsdirektoratet)
3-year nautical engineering programme at Høgskulen på Vestlandet (HVL), NTNU Ålesund, and affiliated colleges, including structured sea-time periods. NMD certification for Navigatør klasse 3 (equivalent to OOW). Flag-state-specific — verify with sdir.no.

Salary — OOW

A newly certificated OOW typically earns USD 2,800–4,200 per month on a container or bulk carrier, rising to USD 4,500–6,500 on tankers where additional tanker endorsements apply. ITF/IBF minimum wage scales for OOW (2025) sit around USD 2,800/month basic wage. Full data by vessel type in the salary database.

Career progression — what comes next

After gaining 12 months of sea service as an OOW (post-CoC), candidates qualify to apply for the Chief Mate Certificate of Competency (STCW II/2). The full progression continues to Master (STCW II/2). See the Deck officer pathway for the Chief Mate and Master stages. Branching options at OOW level include: tanker endorsements (oil / chemical / gas Basic and Advanced), Polar Code (V/4-1), Dynamic Positioning Operator (DPO), and further specialist courses.

Frequently asked questions

How long does the full cadet-to-OOW pathway take?
Typically 3–5 years from starting a maritime academy or cadetship programme: 2–3 years of college study, 12 months of supervised sea time, and flag-state examinations. Some flags (India, Philippines) require a 4-year degree including the sea phase. The UK MCA two-phase system can be completed in around 3 years if sea-time berths are secured promptly.
Can I count sea time as an AB towards the OOW certificate?
Yes — STCW Regulation II/1.2 explicitly provides that 36 months of sea service as a rating forming part of a navigational watch can substitute for the 12 months of supervised cadetship sea time. Flag states implement this differently; the Philippines MARINA upgrading pathway and UK MCA's conversion route both recognise substantial AB sea time.
Is ECDIS mandatory for OOW certification?
ECDIS competence has been a mandatory Table A-II/1 competency since the 2010 Manila Amendments. Flag states require evidence of ECDIS training, either a type-approved course on a generic or type-specific system, plus simulator assessment. Some flag states accept in-company familiarisation records; others require an accredited classroom course.
What is BRM and is it mandatory?
Bridge Resource Management (BRM) is the leadership and teamwork component of STCW A-II/1. It is mandatory for OOW certification under the Manila 2010 amendments — it appears as HELM (Human Element, Leadership and Management) at the operational level in many flag-state training lists. Simulator-based assessment is the norm.
What tonnage does the OOW II/1 certificate cover?
STCW II/1 can be endorsed for ships of 500 GT or more (OOW Unlimited), or for ships under 500 GT on near-coastal voyages (OOW Near-Coastal under STCW II/3). The unlimited endorsement is the industry-standard qualification for deep-sea trading vessels; near-coastal is used in coastal and domestic trades. Flag states set the tonnage brackets.

Primary sources

Flag-state caveat: STCW sets the international floor. Individual flag administrations may require additional national examinations, longer sea-time periods, or supplementary courses not listed here. Always verify current requirements with the issuing flag-state administration.

This page is for information only and does not constitute legal or professional advice. Requirements change — verify with your flag administration before acting.