MARL056 — Demonstrate basic knowledge of marine control systems and automation

Generate a complete, audit-ready assessment tool for this unit in minutes: candidate assessment, assessor guide with model answers, and a coverage matrix mapped to every component below. Reviewed and approved by your qualified person, exported under your branding.

Generate MARL056 free See a real sample

Every new account includes a free credit — no card, no subscription.

What an assessment for MARL056 must cover

77 assessable components: 10 elements (39 performance criteria), 10 performance evidence and 28 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Outline basic actions and functions of automation equipment in marine contexts

1.1Basic concept of an automatic control system is explained using a simple block diagram, correct standard symbols and layout
1.2Components and operation of automatic control systems are outlined
1.3Relative advantages and disadvantages of different mediums used in shipboard automatic control systems are explained

2 Explain action of nozzle/flapper mechanism in pneumatic instruments

2.1Principle of operation of nozzle/flapper as a pneumatic control system component is outlined
2.2Modifications required to make the simple nozzle/flapper mechanism suitable for use in process control systems are explained

3 Explain operating principles and application of sensing and transmitting elements

3.1Different methods of measuring level in an unpressurised tank and in a closed pressurised vessel are sketched and outlined
3.2Applications at sea, advantages and disadvantages and temperature ranges of filled system thermometers are outlined
3.3Operating principles of resistance temperature detector and thermocouple are outlined
3.4Different methods for measuring flow onboard ships that are suited to remote indication and automatic control are identified
3.5Different methods for measuring pressure onboard a ship that are suited to remote indication and automatic control are identified

4 Explain function of controller element and associated hand/auto changeover station in an analogue control loop

4.1Difference between ‘OFF-ON’ control action and fully modulating proportional control action is explained
4.2‘Offset’ and how it may be removed is explained
4.3Basic principles of operation of a simple pneumatic controller are outlined
4.4Action and function of hand/auto changeover station in an automatic control loop is explained using suitable schematic diagrams

5 Explain basic operating principles of electronic circuits and components

5.1Components are identified and electronic circuit diagrams are interpreted
5.2Correct methods of testing electronic components are detailed
5.3Basic operation of operational amplifiers is outlined

6 Explain use of solid-state diodes and transistors to control monitoring and alarm systems

6.1Basic concept of logic and operation of logic gates is outlined
6.2Operation of input/output devices and their application to sequential control systems are explained

7 Explain ‘fail safe’ philosophy and its implications for design and operation of main types of actuators available for operating final correcting elements

7.1Purpose and function of a typical valve actuator and positioner are confirmed
7.2Constructional differences between typical ‘air-to-open’ and ‘air-to-close’ actuators are confirmed
7.3Why ‘fail safe’ may mean valves could either close, open, or remain where they are, upon failure of their associated automatic (or servo remote) operating system, is clarified
7.4Pneumatic piston actuator/positioner assembly used to move final correcting elements pneumatically is outlined
7.5Operating principles of electrical actuators are outlined
7.6Operation of a hydraulic steering gear actuator is compared and contrasted with valve actuator and positioner assemblies

8 Specify requirements for a pneumatic control system air supply

8.1Standard specifications for cleanliness, moisture and oil content of a typical control air system are outlined
8.2Importance of ensuring that standards for cleanliness, moisture and oil content are maintained throughout operation of control air system is explained
8.3Typical system that is able to supply compressed air that meets required standards for cleanliness, moisture and oil content is outlined

9 Explain mechanisms for control of physical parameters in a ship’s machinery

9.1Typical control loops associated with centralised cooling systems that serve the cooling water system space are sketched
9.2Function of typical loops required for control of temperature, pressure and viscosity of fuel supplies to main and auxiliary engines are outlined and sketched
9.3Typical pressure and temperature control loops associated with main and auxiliary engine lubricating oil services are sketched
9.4Function of components of typical control loops for the automatic control of boilers are outlined and sketched
9.5Location and reasons for alarms associated with remote and/or automatic machinery operation to be separate from control function are explained
9.6Tests and procedures required to meet unmanned machinery space (UMS) requirements are specified and different types of associated alarm and monitoring systems are evaluated
9.7Power output and control of a main propulsion diesel engine (slow speed two-stroke) and an electrical generator prime mover (high or medium speed four-stroke) are compared and contrasted

10 Explain schematically total bridge control of a commercial vessel

10.1Engine manufacturer schematic diagram is interpreted and how total bridge control may be achieved to manoeuvre and control the engine is explained
10.2Safety interlocks in sequence of operation depicted in schematic diagram are identified and why they are required is explained
10.3Location of engine control positions, apart from the bridge, is identified from schematic diagram
10.4Why bridge control is preferred option for manoeuvring main engine in modern commercial vessels is explained

Performance evidence

accessing information and sketching diagrams to interpret and explain testing requirements related to control systems on commercial vessels
assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices
explaining basic principles of marine automation and process control
identifying and interpreting numerical and graphical information, including schematic diagrams, relevant to control systems on commercial vessels
identifying and suggesting ways of rectifying faults and malfunctions in control systems on commercial vessels
identifying methods, procedures and materials needed to operate and maintain control systems on commercial vessels
imparting knowledge and ideas through verbal, written and visual means
providing accurate and reliable information
providing appropriate level of detail in responses
reading and interpreting written information related to the operation of control systems on commercial vessels

Knowledge evidence

basic control engineering, including: • fundamentals of automatic control • ON-OFF control • proportional-integral-derivative (PID) control • sequential control • various automatic control
basic electronics, including: • basic electronic circuit elements: • diodes • integrated circuit (IC) and large-scale integrated circuit (LSIC) • semiconductor • thyristor • electron theory • electronic control equipment • flowchart for automatic and control systems
characteristics and functions of temperature, pressure and viscosity of fuel
components, including: • actuators • responders • sensors
concept of ‘fail safe’ philosophy
concepts of unmanned machinery space (UMS), and automated monitoring and control of machinery
control and monitoring of ship machinery
control loops
electronics and power electronics, including: • amplifiers • analogue and DC power supplies • cyclo-converters • MSI onverters • power electronic converters • rectifiers • stabilisers • transistors
fundamentals of automatic control
instrument process and control terms
measurement of process value, including: • flow • general measurement of processes • level, including direct methods and inferential methods • pressure • temperature, including mechanical and electrical
mechanical and electrical sensors
mediums, including: • compressed air • electric currents • electric voltages • hydraulic fluids
ON-OFF control
pneumatic and electrical instrumentation transmitters
preparation, operation, fault detection and necessary measures to prevent damage for machinery items and control systems
principles of: • basic electronic circuits • basic pneumatic systems and action of pneumatic instruments • process control
relevant industry standards for drawing symbols/layouts for schematic diagrams
safety and emergency procedures for operation of propulsion plant machinery, including control systems
safety devices, alarms and monitoring systems
sensing and transmitting elements
sequential control
tests and procedures required to meet UMS requirements
total bridge control
transmission of signals, including: • controlling elements, including pneumatic • transmitters
various automatic controls
work health and safety (WHS)/occupational health and safety (OHS) legislation, policies and procedures

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

See what you get before you start

Real, unedited Auditori output (RIIHAN201E shown), branded for a sample RTO:

Questions about assessing MARL056

What does an assessment tool for MARL056 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MARL056 needs to address all 77 unit components: 10 elements with 39 performance criteria, 10 performance evidence requirements, 28 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 MARL056?

Auditori pulls the current release of MARL056 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 MARL056 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MARL056 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 MARL056, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

Related units

Your MARL056 assessment tool, in minutes.

First unit free. No card, no RTO registration, no subscription.

Generate MARL056 free