Where candidates go wrong
Most EC3 NC failures are not about ignorance. They come from answering the question you hoped for instead of the one asked, reciting without applying, and — the classic — talking confidently about equipment you have never touched. The examiner has sat opposite hundreds of candidates and can hear the difference between a chief engineer and someone who has memorised a Diploma handout.
What AMSA publishes
| Document | What it is | Use it for |
|---|---|---|
| AMSA EC3 NC page (updated 18 March 2026) | Eligibility, sea service, limits, oral | Knowing what your ticket allows |
| AMSA 1112 syllabus (v2.0, Jan 2023) | Seven tables of outcomes and standards | The actual scope of questions |
| Form 1075 examination checklist | The examiner's record, also a study aid | Self-assessment before booking |
| "Prepare for your oral exam" page | How examiners assess | Answer technique |
AMSA 1112 is extracted from AMSA 730 and holds seven tables: 1 Survival at sea, 2 Fire prevention and fire fighting, 3 Personal safety and social responsibility, 4 Marine engineering, 5 Electrical, electronic and control engineering, 6 Watchkeeping and leadership, 7 Security awareness. This course follows those headings, grouped by topic. Table 4 is by far the largest and carries most of the questions.
AMSA's checklist ratings are worth knowing: A is safety-critical, B thorough operational knowledge, C general knowledge. An A-rated topic answered badly is hard to recover.
What your ticket lets you do
| Item | EC3 NC |
|---|---|
| Inboard propulsion (chief engineer) | under 3,000 kW |
| Outboard propulsion | unlimited |
| Area | Exclusive economic zone |
| Validity | 5 years |
| Revalidation | 120 days' sea service in the past 5 years, or approved alternative |
The examiner will expect you to know those limits, because a chief engineer who does not know the boundary of his own certificate is a liability to the owner. Eligibility and sea service are covered in Engineer Class 3 Near Coastal; this course does not repeat them.
CAUTION — domestic, not STCW EC3 NC is a National Law certificate under Marine Order 505. It is not an STCW certificate and does not by itself qualify you to sail as an engineer officer on a foreign-flag superyacht. See Australia: AMSA, the National Law and STCW.
How examiners assess
AMSA says examiners test "how you apply your knowledge, not just what you remember." Expect to be asked to explain how you would respond to a situation, describe examples from your sea service, justify decisions, and point to legislation or procedure. A reliable structure for any scenario:
- Make safe — people, then vessel, then environment.
- Diagnose — what you would look at, in what order, and why.
- Act — the fix, or the operational restriction if you cannot fix it.
- Report — to the master, with the limitation stated plainly.
- Record — log, SMS, and incident report where required.
TIP — say it out loud Practise answers aloud, ideally to an engineer who will interrupt you. The oral rewards clear, ordered speech.
What the examiner wants to hear
That you know the scope of your certificate, answer the question actually asked, reason from first principles when you do not know the specific plant, and always close the loop with the master and the record. "I don't know, but here is how I would find out safely" is a better answer than a confident guess.