# The EOOW & ETO Bible — MCA marine engineer exam prep > MCA marine engineer exam preparation and study companion. (iPhone/iPad app by Azimuth Systems Ltd.) - Source: https://appshunter.io/ios/app/the-eoow-and-eto-bible/id6783911576 (this page in markdown: same URL + `.md`) - Developer: [Azimuth Systems Ltd](https://appshunter.io/developer/1883659138) - Category: Education, Reference - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 65 MB - Languages: American English - Released: 2026-07-04 - Data updated: 2026-08-29 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/the-eoow-and-eto-bible/id6783911576/reviews.md ## What is The EOOW & ETO Bible? The complete study companion for marine engineers preparing for the MCA Engineer Officer of the Watch (EOOW) and Electro-Technical Officer (ETO) Certificates of Competence. Built around the STCW A-III/1 and A-III/6 syllabus and MCA MIN 654, The EOOW & ETO Bible turns months of scattered notes, textbooks and past papers into one focused, structured course that fits in your pocket — onboard, ashore or at the academy. WHO IT'S FOR • Cadets and trainee engineers working toward EOOW • Electro-Technical Officers preparing for the ETO CoC • Qualified engineers refreshing before orals or revalidation CHOOSE YOUR PATH Pick EOOW or ETO when you sign up and your syllabus adapts to you. The core modules for your certificate sit front and centre, with every other engineering topic available as additional study whenever you want it. Switch roles any time. 12 COMPLETE MODULES Marine Diesel Engines · Marine Boilers & Steam · Auxiliary Machinery · Marine Electrical Systems · Automation & Control · Refrigeration & Air Conditioning · Naval Architecture & Stability · Safety & Firefighting · Environmental Compliance (MARPOL) · Watchkeeping & ER Management · High Voltage Systems · Electronics, PLCs & Navigation Systems PART B ORAL SIMULATOR Rehearse the oral exam with an AI examiner that asks realistic scenario questions, listens to your spoken answers and gives instant, constructive feedback — so you walk into the real thing calm and prepared. FLASHCARDS THAT KNOW WHAT YOU FORGET A proven spaced-repetition engine schedules every card at just the right moment, so your revision time goes to what you're about to forget — not what you already know. MOCK EXAMS & QUICK REVISION • Timed mock exams that mirror the real Part A format • Hundreds of practice questions across all five question types • Per-topic accuracy tracking that surfaces your weak areas • Quick Reference cards for pump troubleshooting, MARPOL limits, fuel treatment and more TRACK YOUR PROGRESS Watch your knowledge grow with clear dashboards, streaks and engineering ranks — from Motorman all the way to Chief Engineer. STUDY ANYWHERE Core content works offline, so a weak signal at sea is never an excuse to stop revising. START FREE The Marine Electrical Systems module is completely free. Unlock all 12 modules, the full oral simulator and unlimited mock exams with Premium. SUBSCRIPTION EOOW & ETO Bible Premium is available as a monthly or annual auto-renewing subscription. • Payment is charged to your Apple ID at confirmation of purchase • The subscription renews automatically unless cancelled at least 24 hours before the end of the current period • Manage or cancel any time in your App Store account settings Terms of Use: https://azimuthsystemsltd.co.uk/terms-of-service Privacy Policy: https://azimuthsystemsltd.co.uk/privacy-policy The EOOW & ETO Bible is an independent study aid. It is not affiliated with, endorsed by or sponsored by the Maritime and Coastguard Agency (MCA) or any certifying body. Always study alongside official MCA publications and the current regulations. ## Key features - STCW A-III/1 and A-III/6 syllabus coverage - AI oral exam simulator with spoken answer feedback - Spaced-repetition flashcard engine - Timed mock exams and practice questions - Per-topic accuracy tracking - Offline core content access - Progress tracking with dashboards and ranks ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Premium Monthly | $4.99 | per month | | Premium Annual | $39.99 | per year | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/the-eoow-and-eto-bible/id6783911576/reviews.md ### 5/5 — Great App *2026-07-10, version 1.0.0* So easy to use and navigate and the app content is second to none! Everything you need in one place. Would rate 6 stars if I could ### 5/5 — Easy to use, the BEST aid for learning *2026-07-09, version 1.0.0* I found this app incredibly easy to use, it has a great layout to make navigating through the app clear. I highly recommend it to anyone training to be an engineering officer right now! ## Frequently asked questions about The EOOW & ETO Bible ### What is the EOOW & ETO Bible? The EOOW & ETO Bible is a mobile application designed to help marine engineers prepare for their MCA Engineer Officer of the Watch (EOOW) and Electro-Technical Officer (ETO) Certificates of Competence. It provides study materials, practice exams, and an AI oral exam simulator. ### What specific MCA syllabi does the EOOW & ETO Bible cover? The app is built around the STCW A-III/1 and A-III/6 syllabus and MCA MIN 654. It offers 12 complete modules covering various engineering topics relevant to these certifications. ### How does the AI oral exam simulator work? The Part B Oral Simulator uses an AI examiner to ask realistic scenario questions. It listens to your spoken answers and provides instant, constructive feedback to help you prepare for the actual oral examination. ### What is the learning methodology used by the EOOW & ETO Bible? The app utilizes a spaced-repetition engine for flashcards, ensuring that revision time is focused on areas you are about to forget. It also offers per-topic accuracy tracking to highlight your weak areas. ### Can I use the EOOW & ETO Bible offline? Yes, the core content of the EOOW & ETO Bible works offline. This allows you to continue revising even when you have a weak signal at sea. ### What are the subscription options for the EOOW & ETO Bible? The app offers a 'Premium' subscription which unlocks all 12 modules, the full oral simulator, and unlimited mock exams. This is available as a monthly or annual auto-renewing subscription, both with a 7-day free trial. ### How often is the EOOW & ETO Bible updated? The app was last updated on August 4, 2026, with version 1.1.0. This indicates a recent update, suggesting ongoing development and support for the application. ### Is the EOOW & ETO Bible suitable for all ages? The app has an age rating of 4+, making it suitable for a wide range of users. It is designed for individuals pursuing marine engineering certifications. ## Version history (last 5 releases) ### 1.2.2 — 2026-08-26 FIXES AND IMPROVEMENTS A crash shortly after opening The app could close itself a moment after you opened it, before you had touched anything. That is fixed, and nothing you had saved was ever at risk. The microphone in an oral exam Leaving the app in the middle of an oral — taking a call, switching to something else — used to leave the microphone open behind you. The exam now hands it back as you go, and takes it again only when you return and answer. ### 1.2.1 — 2026-08-24 FIXES AND IMPROVEMENTS The AI examiner's voice It played the opening question at full volume and then dropped away to almost nothing for every question after you first used the microphone. That is fixed. The voice now holds its level for the whole exam, including the closing. Deleting a saved result One bad result used to be permanent. Press and hold any row in Recent Results or Assessment History, confirm, and it is removed — from this device and from your backup, so it will not reappear on your next phone. Signing out keeps your history Signing out used to erase everything stored on the device, including your AI Oral Examiner reports, which nothing could bring back. It no longer does. Your work stays where it is, and is only cleared if a different account signs in on the same device. ### 1.2.0 — 2026-08-18 THE AI ORAL EXAMINER Part B is spoken, so practising it by reading is practising the wrong thing. This release adds a mock oral you actually talk to. You are given a scenario, you answer aloud, and the examiner responds to what you said — not to a script. If you skate over the bit that matters, you get asked about the bit that matters. • Five examiners, each with their own manner and voice • 60 scenarios across all twelve modules, drawn from the same STCW syllabus as the rest of the app • A written report at the end: verdict, score, the points you covered, the points you missed, and the examiner's commentary • Your exam history is kept on your device and encrypted at rest Premium includes 3 oral exams a month. If you want more, session packs are available. Quick Assessment — the written practice you already have — is unchanged and still available as often as you like. ALSO IN THIS RELEASE • The app now follows the language you pick in Settings across every screen, in eleven languages. • Crew referrals now earn AI Oral Examiner sessions instead of free premium time. This is practice, not an assessment of readiness. It is not affiliated with the MCA, and the examiner is an AI. ### 1.1.0 — 2026-08-04 Now available in 11 languages. Lesson content, oral exam scenarios, flashcards and the engineering glossary are now translated into Russian, French, Spanish, Arabic, Chinese, Italian, Hindi, Tagalog, Turkish and Romanian, alongside English. Your language is chosen automatically from your device settings. You can change it any time in Settings. Also in this update: • Fixed the launch screen on iOS — the full EOOW & ETO Bible artwork now displays correctly • Stability and formatting fixes across the app Studying for your EOOW or ETO CoC? We'd love your feedback: info@azimuthsystemsltd.co.uk ### 1.0.3 — 2026-07-24 • Referral and ambassador links now apply automatically after install — sharing with shipmates just works • Smoother, more reliable subscription management • Performance and stability improvements throughout Fair winds and following seas — good luck in your orals! ## More apps by Azimuth Systems Ltd - [The OOW Bible](https://appshunter.io/ios/app/the-oow-bible/id6760291715) - [HELM: OOW Yachts](https://appshunter.io/ios/app/helm-oow-yachts/id6798557600) All apps by Azimuth Systems Ltd: https://appshunter.io/developer/1883659138 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-29.*