How to prepare for a marine crewing interview and pass it on the first try

A crewing interview is not a “memory test.” It’s an honest conversation about safety: whether you will meet international requirements, how you make decisions under pressure, and whether you will be a reliable member of the crew. Successful candidates don’t come “having crammed answers,” but with a clear logic of actions and clean paperwork. That’s what this is about — below.

What crewing really looks at

Any recruiter quickly reduces the assessment of a candidate to three dimensions:

First, compliance with international standards: STCW sets the basic requirements for training, certification, and watchkeeping, without which you simply won’t be cleared for a voyage. This is the foundation, not a “formality” — and it will be checked first.

Second, employment conditions under MLC-2006: the existence and content of your Seafarer Employment Agreement, recruitment and payment procedures, and the ability to file a complaint — all of this is regulated by a separate convention. A candidate who understands these rules comes across as mature and professional.

Third, practical competence: whether you can act in real time when something goes off plan — on the bridge, in the engine room, or during safety drills. What matters here are not slogans, but your concrete examples.

Documents as the “language of trust”

The most common reason for being turned down “on the first try” isn’t knowledge — it’s paperwork. STCW certificates and endorsements (CoC/CoP) must be valid and match the position; this is checked before any technical conversation.

Separately — medical fitness. For the international fleet the ENG1 certificate, issued by doctors approved by the UK Maritime and Coastguard Agency, is often acceptable; it meets MLC requirements and has clear formatting standards. If you have an equivalent from another flag administration, make sure it will be valid under your upcoming contract.

Language and tests: why Marlins and CES

Recruiters aren’t hunting for “test secrets” — they need to understand whether you can communicate safely and whether your subject knowledge is up to the mark.

Marlins is a well-known standard for assessing Maritime English in work situations; there is an official online platform with practice and certificate verification. Don’t cram answers — train listening, reading, and clarity of commands.

CES (Crew Evaluation System) is an online assessment of knowledge across STCW areas; it helps identify a candidate’s strengths and weaknesses before joining. The latest versions even support remote proctoring, so “random success” doesn’t work here.

Technology and reality: ECDIS, BRM and ERM

If you’re a deck officer, be ready to talk about ECDIS not in theory but in practice: chart updates, route check, safety contours, alarms, cross-checking. A good framework is “three steps”: the IMO model course (minimum 40 hours), mandatory familiarization with the specific onboard equipment, and continuous practice. This builds the sense of the boundary between “I’ve seen it” and “I operate it.”

It’s normal to be asked about Bridge/Engine Resource Management — coordination, role allocation, and stopping unsafe actions. This isn’t just “soft skills,” but part of safe-navigation standards directly tied to STCW requirements and good ECDIS operating practice.

Ethics, safety and your rights: MLC and ISPS

In seafarer recruitment there should be no fees charged to the candidate; your employment is arranged through a transparent hiring system, and the content of the employment agreement is not a secret — you have the right to review it in advance. This is the logic of MLC-2006: level rules for seafarers and shipowners in terms of work, living conditions, and medical care.

Separately — the ISPS Code: basic literacy regarding ship/port security levels, access control, and cargo control. At interviews this is often checked with short cases — not for formality, but to understand your behavior in the “grey areas” of security.

How to speak at the interview so you’re heard

Avoid the “encyclopedic tone.” The recruiter needs to hear your logic of action: briefly describe the situation, explain your decision, and state the result. For example, not “I know ECDIS,” but “before departure I checked updates, ran a route check, set safety contours, aligned roles; underway — waypoint control and cross-checking.” For engine topics the principle is the same: concrete procedures, parameters, logkeeping, interaction with the bridge.

How not to stumble on the small stuff

Banal things often decide everything. Document dates, consistent transliteration of your name across certificates, neat scans, a prepared electronic folder, a working camera/microphone. Clarify voyage logistics, training policy, and internet access — these aren’t “demands,” they’re your responsibility for your own effectiveness. And if someone hints at “off-the-books payments” for employment — politely cite MLC provisions and ask for official communication.

In closing

Those who pass the interview “on the first try” aren’t the ones who learned a hundred questions, but those who demonstrate professional behavior: tidy paperwork, understanding of standards, and calm in a technical discussion. Results always come from simple things: valid documents, honest examples from voyages, respect for safety, and common sense — the rest follows with training and practice.

Sources: STCW Convention (1978, as amended); MLC-2006 (Maritime Labour Convention); IMO Model Courses (ECDIS, BRM, ERM); Marlins Test; Crew Evaluation System (CES); ILO/IMO Guidelines on the Medical Examination of Seafarers; ISPS Code (2002).

You can take a free CES test on our partners’ website, Education Marine. (clickable)