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.
1.2.2
August 26, 2026
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.
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.
