Marine Engineering Pro is the complete, ad-free study and career companion for marine engineers, maritime cadets, engine room trainees and officers preparing for certificate of competency exams. Learn all 30 subjects, prepare for orals, take timed mock exams, use 60 engine room tools and keep your sea time and certificates organised. All offline, with a premium design. ✅ Ad-Free, One-Time Purchase ✅ All 30 Marine Engineering Subjects • General Concepts • Advanced Concepts • Basics of Marine Engineering • Chemistry for Marine Engineering • Marine Auxiliary Machinery • Marine Diesel Engine • Marine Electrical Machines • Marine Electronic • Marine Engine • Marine Hydraulic and Fluid Machinery • Marine Machinery Drawing • Marine Manufacturing Technology • Marine Refrigeration and Air Conditioning • Marine Steam Engine • Naval Architecture • Safety Precautions and Watch Keeping • Ship Construction • Ship Design • Ship Operational Management and IMO Requirements • Ships Fire Prevention and Control • Marine Control Engineering and Automation • Marine Engineering Materials • Marine Machinery and Systems Design • Marine Vehicles Performance • Marine History • Mathematics for Marine Engineering • Mechanics of Marine Machines • Offshore Technology • Seamanship, Elementary Navigation and Survival at Sea • Stability of Ships ✅ Oral Exam Prep (NEW) Oral questions organised by STCW function, with a dedicated oral flashcard deck to rehearse model answers. ✅ Timed Mock Exams (NEW) Exam-style timed papers across subjects, with a score, subject breakdown and full answer review. ✅ 30 MCQ Practice Sets Instant answers and explanations, review of wrong answers, bookmarks and progress tracking. ✅ Flashcards With Spaced Repetition Smart revision that brings each card back at the right time. ✅ Sea Time Log (NEW) Record your vessels and sign-on/sign-off dates and see your total sea service at a glance. ✅ Certificate Expiry Reminders (NEW) Store your certificates and get notified before they expire. ✅ Backup & Restore (NEW) Export all your study progress, sea time and certificates to a file and restore it on any phone. ✅ 60 Marine Engineering Tools 7 NEW Pro tools: Bunker Density (VCF) • Cylinder Balance Analyzer • Ballast Exchange Planner • Boiler Blowdown Calculator • Cable Voltage Drop • Starting Air Capacity • Speed & Fuel Planner Plus: ECA Fuel Changeover • NOx Tier & SOx Limits • Refrigerant P-T Chart • Fuel Calculator • Propeller Efficiency • Bunker Calculator • Pressure Converter • Shaft Torque • Slip Calculator • Engine Power • SFOC Estimator • Back Pressure • MIP Calculator • Thermal Expansion • Pump Curve Evaluator • 3-Phase Power • Battery Estimator • Insulation Timer • Grounding Checker • Generator Load Sharing • Refrigeration Performance • Flow Rate, Temperature & Volume Converters • Fuel Viscosity Converter • Fuel Blending • Sea Water Pump Flow • Turbocharger Analyzer • Refrigerant Leak Estimator • Cooling ΔT Checker • Lube Oil Life • Purifier Efficiency • Heat Exchanger Efficiency • Oil Water Tracker • Air Compressor Analyzer • Boiler Efficiency • Fault Diagnosis Helper • Bearing Life • Vibration Severity • Fire Zone Checker • GMDSS Checklist • NAVTEX Decoder • Signal Flags • Marine Radio Chart • Emission Calculator • Time Zone Converter • Sensor Calibration • IMO Codes Lookup • Watchkeeping Log • Lube Oil Tracker • Loadline / Draft Survey • Tank Sounding Converter • Trim & Stability ✅ Smart Reading Reading progress, next/previous topic, "Continue reading" and a daily study streak. ✅ Notes, Save as PDF & Print ✅ Formulas, Dictionary, Q&A, How-To Guides & Updates ✅ Works Offline • Bookmark & Search • Light & Dark Mode • Priority Support Best For: • Marine Engineering Students & Cadets • Officers Preparing for CoC Exams • Engine Room Trainees & Watchkeepers Every subject, every tool, exam prep and your seafarer records in one ad-free app.