MARL058 — Demonstrate basic knowledge of marine electrical systems

1 Explain hazards and isolation procedures associated with live electrical components

• 1.1Effects of electricity on the human body are outlined
• 1.2Procedures to be taken in the event of a person suffering an electric shock are clarified
• 1.3Correct procedure for isolating an electrical circuit is clarified
• 1.4Electrical hazards in a vessel at sea or port are identified

2 Explain principles of power generation and transmission in alternating current (AC) and direct current (DC) circuits

• 2.1Excitation methods used to produce AC and DC voltages are outlined
• 2.2Basic voltage control of generated AC voltages is outlined

3 Outline key features of basic electrical diagrams used on vessels

• 3.1Types of diagrams used to depict electrical systems on ships are outlined
• 3.2Electrical symbols used in basic electrical diagrams are identified
• 3.3Electrical devices used in basic electrical circuits are clarified

4 Use common electrical measuring and testing instruments

• 4.1Different types of multimeters are used appropriately
• 4.2Functions of insulation and ‘tong’ testers are explained
• 4.3Safety requirements when using test equipment are applied

5 Rectify basic electrical faults

• 5.1Fault situation is determined by appropriate questioning of client or operator
• 5.2Safe working practices are demonstrated when carrying out fault-finding work
• 5.3Basic common faults of equipment and techniques used to find faults are outlined
• 5.4Knowledge of various types of basic common faults of circuits and techniques is used to find faults
• 5.5Basic common faults in electrical equipment are identified and rectified

6 Outline basic components and layout of a marine electrical switchboard

• 6.1Layout of a typical three-wire insulated electrical system is sketched
• 6.2Interconnections between main switchboard, emergency switchboard and shore supply are explained
• 6.3Procedure for changing over to emergency switchboard for testing or during loss of mains power is outlined
• 6.4Safety features on a typical marine switchboard are identified

7 Explain operation of shipboard alternators

• 7.1Types and construction methods of alternators used on a marine vessel are outlined
• 7.2Principles of operation of a marine type alternator are outlined
• 7.3Relationship is shown between voltage and speed in regulation of alternator
• 7.4Operational characteristics of a marine alternator are outlined
• 7.5Excitation and automatic voltage regulation systems used with marine alternators are clarified

8 Explain procedures for paralleling of alternators

• 8.1Process of measuring voltage, frequency and phase angle is outlined
• 8.2Automatic and manual procedures for synchronising and paralleling marine alternators, including machines of different capacities, are clarified
• 8.3How two machines can be adjusted to share kilovolt-ampere reactive (kVAR) and kilowatt (kW) loads is confirmed
• 8.4Process of removing an alternator from the bus is outlined

What does an assessment tool for MARL058 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MARL058 needs to address all 71 unit components: 8 elements with 30 performance criteria, 10 performance evidence requirements, 31 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 MARL058?

Auditori pulls the current release of MARL058 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 MARL058 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MARL058 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 MARL058, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.