Prepare for MCA Engineer Officer of the Watch and Electro-Technical Officer exams with this comprehensive study tool. It offers structured modules, an AI oral exam simulator, and spaced-repetition flashcards to help you master the STCW syllabus and track your progress.
1.1.0
August 4, 2026
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
MoreUnlock every module, orals & mock exams
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.
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.
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.
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.
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.
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.
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.
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.
