Marine Diesel Generator

Marine Diesel Generator is a picture-led study guide to the four-stroke medium speed diesel engine that drives a ship's alternator, written for marine engineering students and officers preparing for UK MCA oral examinations: Engineer Officer of the Watch (EOOW), Second Engineer (Class 2) and Chief Engineer (Class 1).

Turn the generator set in your hands. The interactive 3D model works completely offline. Drag to rotate, pinch to zoom, cut the casing away to see the pistons, connecting rods and crankshaft, run the engine and watch the charge air, the exhaust and the lubricating oil move through it, pull the parts apart in an exploded view, and tap any part to see what it is and how it works.

WHAT IS INSIDE

3D Model: cutaway, running engine, air, exhaust and oil flow, exploded view, guided tour, tap any part for its card.

How it Works: the four-stroke cycle and the story of the air, the fuel and the power in eleven steps, each with a picture and a button to see it in 3D, plus the key figures of a typical installation.

Diagrams: the labelled cutaway and the system drawings of the fuel oil, lubricating oil, cooling water and starting and stopping systems, the four-stroke cycle and the general arrangement. Open any drawing full screen and pinch to zoom.

Parts: 33 picture cards. Each gives what it is, how it works, the material, checks and the examiner's questions, with a Show in 3D button.

Operation: before starting, starting, running checks, stopping, after stopping, emergency operation and safety points.

Oral Questions: choose EOOW, Class 2 or Class 1 and a topic, say your answer aloud, then reveal the model answer with key points and the source. Mark yourself Got it, Nearly or Missed; progress is kept on your device.

Picture Quiz: a picture of a part and four names. Multiple Choice Quiz: questions with the answers shuffled every time.

Glossary of diesel generator terms.

Maintenance and Faults and Remedies: intervals, procedures, symptoms, causes and actions, from daily checks to failure to start, overspeed, overheating and low lubricating oil pressure.

SYLLABUS
Every oral question is mapped to the MCA engineer oral examination syllabus, MIN 654 (M) Amendment 1 (April 2026), and every relevant knowledge line of the EOOW and Chief/Second Engineer competency grids is covered by at least two questions. Browse the questions by grade or by MIN 654 competence.
Source of the syllabus: Maritime and Coastguard Agency, MIN 654 (M) Amendment 1, published on gov.uk: https://www.gov.uk/government/publications/min-654-m-engineering-and-electro-technical-officer-oral-exam-syllabus-amendment-1 . This app is an independent study aid and is not affiliated with or endorsed by the MCA or any government body.

FREE AND PRO
Free: the 3D model, How it Works, the system Diagrams, all part cards, Operation, the glossary, the EOOW oral questions, 15 multiple choice questions and 10 picture quiz items.
Pro (one payment, no subscription): the Class 2 and Class 1 oral questions, Faults and Remedies, Maintenance, the full quizzes and Search.

PRIVATE AND OFFLINE
No adverts, no analytics, no account, no data collected. Purchases are handled by Google Play. Everything works offline.

ABOUT THE CONTENT
Content based on real ship's machinery manuals and the author's teaching; not affiliated with any manufacturer. The explanations are the author's own, informed by the maker's operating manual of a typical generator set installation. Your own engine will differ.

Created by Anindya Banerjee
www.anindyabanerjee.co.uk

For educational use only. Always consult the maker's instruction manual, your company procedures and your ship's own documentation.