MARL055 — Demonstrate basic knowledge of marine auxiliary machinery and equipment

1 Outline layout of engine room and functions of auxiliary machinery in engine room

• 1.1Layout of a typical engine room is outlined
• 1.2Types and functions of auxiliary machinery found in an engine room are explained
• 1.3Location, function and operation of all safety devices found on main and auxiliary machinery and within engine room, including shutdowns and engine room escape routes are outlined
• 1.4Common operating pressures and temperatures of fluids within engine room are identified, and how to respond to abnormal parameters is clarified

2 Explain duties and responsibilities of an Engineer Watchkeeper during a watch

• 2.1Duties and responsibilities of an Engineer Watchkeeper with respect to safety of personnel and vessel during and taking over the watch are clarified
• 2.2Importance of ensuring all events related to machinery are recorded in the log is explained
• 2.3Duties and responsibilities of an Engineer Watchkeeper in prevention and extinction of fire in machinery spaces are clarified
• 2.4Duties and responsibilities of an Engineer Watchkeeper in relation to prevention of flooding and avoidance of pollution are clarified
• 2.5Routine duties and responsibilities of an Engineer Watchkeeper with respect to safe operation of propulsion and auxiliary machinery are clarified
• 2.6Duties and responsibilities of an Engineer Watchkeeper on an unmanned machinery space (UMS) vessel are clarified
• 2.7Procedure for familiarising oneself on joining a new vessel is clarified

3 Recognise key features, applications and treatment of fuels, lubricants and chemicals used onboard vessels

• 3.1Types, properties, applications and treatments of various fuels used onboard vessels are outlined
• 3.2Procedures to be followed before and during fuel bunkering are clarified
• 3.3Types, properties, applications and treatments of various lubricants used onboard vessels are outlined
• 3.4Uses and safe handling methods for various types of chemicals used onboard vessels are outlined
• 3.5Fuel system layout, including fuel treatment method, is detailed
• 3.6Working principles, construction and safe operation of purifiers and clarifiers are explained

4 Explain operation and maintenance of typical pumping systems used onboard vessels

• 4.1Basic working principles, components and properties of different types of pumps are outlined
• 4.2Types of heat exchangers, their basic working principles and applications are outlined
• 4.3Correct operation and maintenance of pumps and heat exchangers are detailed
• 4.4Key features of bilge, cargo and ballast pumping systems are outlined
• 4.5Types, operating principles and requirements for oily-water separators or similar equipment are outlined
• 4.6Other approved methods of disposing of oily water are identified
• 4.7Procedure for completing oil record book is clarified

5 Explain operation and maintenance of marine air compressors

• 5.1Types, characteristics, components and applications of various compressors used onboard vessels are compared and contrasted
• 5.2Correct pre-operational checks, starting procedures, safe operation and basic maintenance required for air compressors are detailed
• 5.3Potential safety hazards associated with compressed air are identified
• 5.4Locations of all mountings, safety devices, alarms and shutdowns on compressors, air receivers and compressed air systems are identified, and their functions are outlined
• 5.5Different requirements and production methods for control air, method of production and special requirements for a breathing apparatus compressor, are clarified

6 Explain different types, safe operation and testing of steering gear commonly used onboard vessels

• 6.1Essential statutory regulations covering operation of steering gear are established
• 6.2Operation of different types of steering gear used onboard vessels is clarified
• 6.3Working principles of variable delivery pumps used in steering gear are explained
• 6.4Location of all alarms and safety devices associated with steering gear is identified and their functions are outlined
• 6.5Process for testing steering gear and monitoring its performance is explained

7 Explain operation of an evaporator

• 7.1Why freshwater may have to be produced from seawater is explained
• 7.2Function, construction and operation of evaporators is explained
• 7.3Correct starting procedures, safe operation and basic maintenance required for an evaporator are clarified
• 7.4Process for testing the evaporator and monitoring performance is explained
• 7.5Treatment of distillate for domestic purposes is outlined
• 7.6Quality necessary if water being produced by a distiller is to be used for human consumption is outlined

8 Explain basic operation of marine refrigeration systems

• 8.1Properties of an ideal refrigerant are listed
• 8.2Refrigerants commonly used onboard are listed and reasons for their use are clarified
• 8.3Basic construction and operation of a marine refrigeration system is explained
• 8.4Preparation, operation, fault detection and necessary actions to prevent damage in marine refrigeration systems are confirmed
• 8.5Personal safety and environmental hazards associated with chlorofluorocarbons (CFCs) and ozone depleting substances are identified

9 Explain basic operation of marine air conditioning and ventilation systems

• 9.1Basic construction and operation of marine air conditioning and ventilation systems in routine and emergency situations are explained
• 9.2Preparation, operation, fault detection and necessary actions to prevent damage in marine air conditioning and ventilation systems are confirmed

10 Explain basic operation of marine gas turbines

• 10.1Basic flow of air and gas through a simple cycle marine gas turbine is outlined
• 10.2Materials and construction of compressor, combustion system and turbine in a single and two-shaft design turbine are detailed
• 10.3Basic controls required for the control and protection of the plant are outlined
• 10.4Types, basic construction and operation of deck machinery are outlined, and accessories necessary for safe operation are listed

11 Explain types, safe operation and maintenance of deck machinery

• 11.1Types, basic construction and operation of deck machinery are outlined
• 11.2Preparation, operation, fault detection and necessary actions to prevent damage in deck machinery are confirmed

What does an assessment tool for MARL055 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MARL055 needs to address all 83 unit components: 11 elements with 53 performance criteria, 10 performance evidence requirements, 19 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MARL055?

Auditori pulls the current release of MARL055 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MARL055 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MARL055 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MARL055, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.