Master the IMO conventions every flag state tests: COLREGS, STCW, MARPOL, SOLAS, ISM, and ISPS.

This page is different from the others on MMCE.app. There is no "international" maritime credential issued by a supranational body - every mariner's Certificate of Competency comes from a flag state, whether that is the United States, India, the Philippines, the United Kingdom, Panama, Liberia, the Marshall Islands, or one of roughly 170 other IMO member states. What is international are the conventions of the International Maritime Organization (IMO) that every flag state has ratified and domesticated. When you search for "COLREGS practice questions", "STCW Basic Training prep", "MARPOL exam", or "SOLAS revision", you are looking for study material that is genuinely the same from Manila to Mumbai to Miami - and that is what this hub indexes.

Issuing authority/authorities

The International Maritime Organization (IMO), headquartered at 4 Albert Embankment, London, is a specialised agency of the United Nations that develops and maintains the regulatory framework for international shipping. IMO does not itself issue mariner credentials or conduct exams - it publishes conventions that member states then enact through national law. The six conventions that dominate every officer-level maritime exam are:

• COLREGS 1972 - Convention on the International Regulations for Preventing Collisions at Sea, in force since 1977, covering 41 rules across steering, lights and shapes, sound signals, and annexes. This is the single most-tested document in world maritime examining.
• STCW 1978 as amended (Manila 2010) - Standards of Training, Certification and Watchkeeping for Seafarers, defining competences for every rank from rating to Master and Chief Engineer. The STCW Code parts A and B underpin every modern CoC.
• MARPOL 73/78 - International Convention for the Prevention of Pollution from Ships, with six annexes covering oil (I), noxious liquids (II), harmful packaged substances (III), sewage (IV), garbage (V), and air pollution (VI).
• SOLAS 1974 - Safety of Life at Sea, the master convention for ship construction, fire protection, life-saving appliances, radiocommunications (GMDSS), navigation safety, and carriage of cargoes.
• ISM Code - International Safety Management Code, made mandatory by SOLAS Chapter IX, setting out the Safety Management System every shipping company must maintain.
• ISPS Code - International Ship and Port Facility Security Code, made mandatory by SOLAS Chapter XI-2, covering ship security plans, SSO duties, and security levels 1, 2, and 3.

Officer pathways

Every officer-level licence in the world tests these conventions. An OIC-NW candidate in Manila sits the same COLREGS rules as a Third Mate candidate at the USCG Regional Exam Center in Houston, the same STCW II/1 competences as a Second Mate FG aspirant at Mumbai MMD, and the same SOLAS chapters as a Chief Mate candidate sitting an MCA Orals exam in Southampton. The specific paper, format, and pass mark vary by flag state - but the underlying material is international by design, which is why STCW audits (EMSA, USCG NMC cross-checks) are so aggressive about content parity.

Rating / unlicensed pathways

Every seafarer, including ratings, must complete STCW Basic Training (STCW VI/1) before first sea service, covering Personal Survival Techniques, Fire Prevention and Fire Fighting, Elementary First Aid, and Personal Safety and Social Responsibilities. Tanker ratings add STCW V/1 tanker familiarisation; passenger-ship ratings add STCW V/2 crowd-management. These are IMO-model courses delivered nationally, but the syllabus is international.

Naval pathways

Naval officers worldwide study COLREGS and SOLAS even though naval ships are partially exempt under COLREGS Rule 1(e) and SOLAS Regulation I/3. Bridge watchkeeping certification in every navy draws on the same rule set.

Pass thresholds & exam structure

There is no IMO-set pass threshold - that is a flag-state decision. What is universal is the weight placed on Rules of the Road / COLREGS: every maritime administration either explicitly requires a higher pass mark on COLREGS (USCG requires 90% on the Rules of the Road module, for instance) or tests it through oral examination where a single misapplied rule ends the exam. MMCE.app therefore enforces a 90% pass threshold on the rules module and 70% on every other module, a pattern that generalises across USCG, DG Shipping India, MARINA, MCA, Transport Canada, AMSA, and RMI. Exam structure varies: USCG uses computer-based multiple choice; MCA uses written plus orals; DG Shipping uses written plus orals plus increasingly CBT; MARINA/PRC uses written papers; RMI uses the MI-319 multiple-choice paper. MMCE.app's full-length diagnostic tests are configurable to approximate each of these.

Training & sea service requirements

STCW Part A sets minimum sea-time requirements that flag states cannot reduce: 12 months for OIC-NW, 12 months on top for Chief Mate, 36 months on top for Master (or 24 months with supernumerary time). STCW modular certificates (Basic Training, Advanced Fire Fighting, Medical First Aid, Medical Care, Proficiency in Survival Craft and Rescue Boats, GMDSS, ARPA, ECDIS, Ship Security Officer, Leadership and Managerial Skills) are required at defined career points and revalidated every five years.

How to study with MMCE.app

This is the hub for the convention-level content. Start with the rules module for COLREGS practice - every rule, every annex, diagram questions for crossing, head-on, overtaking, restricted visibility, narrow channels, traffic separation schemes, lights and shapes, and sound signals. Layer deck-safe for SOLAS chapters on fire, life-saving, GMDSS, and navigation safety, plus MARPOL annexes I-VI, ISM, and ISPS. The adaptive IRT 3PL engine tracks your ability per module; the AI tutor explains every incorrect answer with a reference back to the actual rule, regulation, or annex text; and missed questions cycle into SM-2 spaced-repetition decks.

Related credentials on MMCE.app

Once you have drilled the convention layer, move to your flag-state hub: /usa (USCG MMC), /india (DG Shipping), /philippines (MARINA / PRC), /marshall-islands (MI-319), and forthcoming hubs for UK MCA, Panama, Liberia, and Canada. The convention content you master here transfers directly to every one of them.