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Merchant Navy Careers

What qualifications and requirements are needed to join the merchant navy?

Joining the merchant navy generally requires a good secondary education with science and maths for officer routes, medical and eyesight fitness, meeting age limits, and completing STCW training.

Updated 2026-08-17

Expert Answer

<p>Joining the merchant navy requires a seafarer medical certificate, an eyesight standard, STCW basic safety training and a minimum age set by the flag state, with officer cadets also needing secondary passes in maths, science and English.</p>The honest answer is that requirements vary by flag state, training institution and whether the entrant is aiming to become an officer or a rating, but the underlying structure is broadly similar everywhere because it all sits on top of the STCW convention.

Officer entrants, deck or engineer cadets working toward a certificate of competency, generally need a solid secondary education with passes in mathematics, physics or a combined science, and English, since the cadetship curriculum covers subjects like naval architecture, marine engineering science, navigation and stability that assume a reasonable grounding in these areas. Many countries now run this through a maritime university or academy leading to a degree or diploma combined with sea time, while others use a company-sponsored cadetship built around a training record book and a period at a nautical college; either way, the academic bar for engineering cadets in particular tends to be set higher because of the technical content of the marine engineering syllabus.

Rating entrants, joining the deck, engine or catering departments without aiming immediately for an officer's certificate, face a lower academic threshold, with the emphasis on physical fitness, a clean record, and completing the mandatory STCW basic safety training, personal survival techniques, fire prevention and firefighting, elementary first aid, and personal safety and social responsibility, before joining a ship. Many officers began as ratings and moved up through further study and sea time, so the rating route is not a dead end for someone who wants to progress later.

Across both routes, certain gates apply universally: a seafarer medical fitness examination conducted by an approved doctor, checking general health, cardiovascular and respiratory fitness, and hearing; an eyesight standard, and for deck officers specifically a colour vision test, since misreading a navigation light's colour has obvious safety consequences; a minimum age, usually sixteen to eighteen depending on the flag and role; and increasingly a basic swimming ability, since it is required or strongly expected before sea service.

Beyond the paperwork, companies and academies look hard at whether a candidate understands what the lifestyle actually involves, months away from home, working in a hierarchical, close-quarters environment, shift and watchkeeping patterns that do not follow a normal day, because attrition among cadets who did not anticipate this is a real and recognised problem in the industry. Anyone serious about joining should contact training providers and shipping companies directly for their specific entry requirements, since the exact combination of exams, age and medical standards differs by country and employer.

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