Marine Mechanic Course

Lesson 1 • Safety Culture and Hazard Awareness

Covers personal protective equipment, hazard identification, and emergency signal recognition. Builds the safety mindset required before hands-on engine room work begins.

Lesson 2 • The Ship Mechanic's Role and Responsibilities

Defines the duties, watch-keeping obligations, and chain of command for ship mechanics. Connects professional expectations to daily operational tasks aboard vessels.

Lesson 3 • Marine Terminology and Vessel Orientation

Introduces directional terms, compartment names, and system labels used throughout the industry. Provides the vocabulary needed for all subsequent technical instruction.

Lesson 1 • Engine Starting and Stopping Procedures

Describes pre-start checks, air start systems, and controlled shutdown sequences. Proper procedures prevent mechanical damage and ensure crew safety.

Lesson 2 • Engine Block and Cylinder Components

Examines the bedplate, frame, cylinder liner, piston, and connecting rod assembly. Students identify wear patterns and understand load paths through the engine structure.

Lesson 3 • Fuel Injection Systems

Details fuel pump, injector, and common-rail injection system design and operation. Accurate fuel delivery knowledge is essential for engine performance and emissions control.

Lesson 4 • Turbocharging and Scavenging Systems

Covers turbocharger construction, scavenge air flow, and charge air cooling. Explains how these systems increase power output and reduce fuel consumption.

Lesson 1 • Air Compressors and Compressed Air Systems

Covers reciprocating and screw compressor design, inter-cooling, and air receiver maintenance. Compressed air is critical for engine starting and control systems.

Lesson 2 • Auxiliary Diesel Generators

Describes generator set construction, load sharing, and parallel operation procedures. Reliable electrical power generation is fundamental to all shipboard operations.

Lesson 3 • Oily Water Separators and Bilge Systems

Covers bilge pump operation, oily water separator function, and discharge monitoring requirements. Proper operation prevents environmental violations and regulatory penalties.

Lesson 4 • Centrifugal and Positive Displacement Pumps

Explains pump classifications, impeller design, cavitation, and priming requirements. Pump knowledge underpins all fluid-handling systems covered in later chapters.

Lesson 1 • Lubricant Properties and Selection

Explains viscosity, additives, base oil types, and compatibility requirements for marine applications. Correct lubricant selection directly affects engine wear rates and service life.

Lesson 2 • Main Engine Lubrication System Layout

Maps the main lube oil circuit, sump, filters, coolers, and bearing supply lines. Understanding the circuit enables rapid fault isolation during abnormal conditions.

Lesson 3 • Cylinder Lubrication for Two-Stroke Engines

Covers cylinder oil feed rates, lubricator timing, and the role of base number in neutralizing combustion acids. Cylinder lubrication is unique to large two-stroke main engines.

Lesson 1 • Combustion Analysis and Optimization

Uses indicator diagrams, exhaust gas temperatures, and smoke analysis to evaluate combustion quality. Optimization reduces fuel consumption and exhaust emissions simultaneously.

Lesson 2 • Marine Fuel Types and Specifications

Compares heavy fuel oil, marine diesel oil, and low-sulfur fuels by viscosity, density, and ignition quality. Fuel properties determine handling temperatures and purifier settings.

Lesson 3 • Fuel Storage, Transfer, and Heating

Covers tank arrangement, heating coil design, and transfer pump operation for heavy fuel oil. Maintaining correct fuel temperature prevents viscosity-related injection problems.

Lesson 4 • Fuel Purification and Centrifugal Separators

Explains centrifuge operating principles, gravity disc selection, and purifier versus clarifier modes. Effective purification removes water and solids that cause injector wear.

Lesson 1 • Turbocharger Maintenance and Overhaul

Covers rotor balancing, bearing replacement, nozzle ring inspection, and water washing procedures. Turbocharger condition directly affects engine power output and fuel efficiency.

Lesson 2 • Cylinder Head Overhaul

Details removal, valve grinding, seat reconditioning, and reassembly of cylinder heads. Correct valve seating restores compression and prevents hot gas blow-by.

Lesson 3 • Planned Maintenance System Principles

Introduces interval-based and condition-based maintenance strategies and their documentation requirements. A structured maintenance system reduces unplanned breakdowns and extends component life.

Lesson 4 • Main and Crankpin Bearing Inspection

Explains bearing removal, clearance measurement with feeler gauges and Plastigage, and shell replacement criteria. Bearing condition directly affects crankshaft alignment and engine longevity.

Lesson 1 • Stern Tube and Shaft Sealing Systems

Explains oil-lubricated and water-lubricated stern tube designs, lip seal replacement, and bearing clearance measurement. Effective sealing prevents seawater ingress and oil pollution.

Lesson 2 • Controllable Pitch Propeller Hydraulic System

Details the hydraulic oil circuit, servo valve, and pitch feedback system of controllable pitch propellers. Hydraulic system integrity is essential for precise maneuvering control.

Lesson 3 • Propeller Types and Hydrodynamic Principles

Compares fixed pitch, controllable pitch, and azimuth thruster designs and their efficiency characteristics. Propeller selection determines vessel speed, maneuverability, and fuel economy.

Lesson 4 • Shaft Alignment Procedures

Introduces optical, laser, and jack-up alignment methods for ensuring correct shaft centerline. Misalignment causes rapid bearing wear and excessive vibration throughout the vessel.

Lesson 1 • Main Engine Performance Deviations

Analyzes causes of power loss, excessive fuel consumption, abnormal exhaust temperatures, and misfiring. Performance data trending enables early detection before failures escalate.

Lesson 2 • Alarm Response and Emergency Procedures

Trains rapid response to high-temperature, low-pressure, and overspeed alarms using established protocols. Correct alarm response prevents minor faults from becoming catastrophic failures.

Lesson 3 • Root Cause Analysis and Failure Reporting

Applies five-why and fishbone analysis techniques to completed failure events and documents findings. Formal reporting drives systemic improvements and prevents recurrence across the fleet.

Lesson 4 • Auxiliary System Fault Identification

Covers pump cavitation, heat exchanger fouling, compressor valve failure, and generator fault diagnosis. Auxiliary faults can cascade into main engine shutdowns if not resolved promptly.