Unit of competency Outline
Date retreived
23/07/2026 12:24 AM AWST
23/07/2026 12:24 AM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Demonstrate basic knowledge of marine electrical systems
Demonstrate basic knowledge of marine electrical systems
Unit of competency
National Code
MARL007
MARL007
State Code
WH874
WH874
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
04/02/2014
Field of Education
031701 - Maritime Engineering
Original Release Date
04/02/2014
Nominal Hours
70
Description
This unit involves the skills and knowledge required to operate alternators, generators and control systems to supply shipboard electrical power on board a commercial vessel.This unit applies to people working in the maritime industry as a Marine Engineering Watchkeeper on commercial vessels greater than 750 kW or as an Engineer Class 3 Near Coastal.This unit has links to legislative and certification requirements.
Notes
Elements and Performance Criteria
1 Explain hazards and isolation procedures associated with live electrical components
- 1.1 Effects of electricity on the human body are outlined
- 1.2 Procedure to be taken in the event of a person suffering an electric shock is clarified
- 1.3 Correct procedure for isolating an electrical circuit is clarified
- 1.4 Electrical hazards in a vessel at sea or port are identified
2 Explain basic operation of and hazards associated with marine high voltage installations
- 2.1 Functional and operational requirements for a marine high voltage system are detailed
- 2.2 Safety procedures required when working in high voltage environments are outlined
- 2.3 Procedure for assisting suitably qualified personnel to carry out maintenance and repair of high voltage switchgear of various types is outlined
3 Explain principles of power generation and transmission in AC and DC circuits
- 3.1 Excitation methods used to produce alternating current (AC) and direct current (DC) voltages are outlined
- 3.2 Basic voltage control of generated AC voltages is outlined
4 Outline key features of basic electrical diagrams used on vessels
- 4.1 Types of diagrams used to depict electrical systems on ships are outlined
- 4.2 Electrical symbols used in basic electrical diagrams are identified
- 4.3 Electrical devices used in basic electrical circuits are clarified
5 Use common electrical measuring and testing instruments
- 5.1 Different types of multimeters are used appropriately
- 5.2 Functions of insulation and ‘tong’ testers are explained
- 5.3 Safety requirements when using test equipment are applied
6 Rectify basic electrical faults
- 6.1 Fault situation is determined by appropriate questioning of client or operator
- 6.2 Safe working practices are demonstrated when carrying out fault-finding work
- 6.3 Basic common faults of equipment and techniques used to find faults are outlined
- 6.4 Knowledge of various types of basic common faults of circuits and techniques is used to find faults
- 6.5 Basic common faults in electrical equipment are identified and rectified
7 Outline basic components and layout of a marine electrical switchboard
- 7.1 Layout of a typical three wire insulated electrical system is sketched
- 7.2 Interconnections between main switchboard, emergency switchboard and shore supply are explained
- 7.3 Procedure for changing over to emergency switchboard for testing or during loss of mains power is outlined
- 7.4 Safety features on a typical marine switchboard are identified
8 Explain operation of shipboard alternators
- 8.1 Types and construction methods of alternators used on a marine vessel are outlined
- 8.2 Principles of operation of a marine type alternator are outlined
- 8.3 Relationship is shown between voltage and speed in regulation of alternator
- 8.4 Operational characteristics of a marine alternator are outlined
- 8.5 Excitation and automatic voltage regulation systems used with marine alternators are clarified
9 Explain procedures for paralleling of alternators
- 9.1 Process of measuring voltage, frequency and phase angle is outlined
- 9.2 Automatic and manual procedures for synchronising and paralleling marine alternators, including machines of different capacities are clarified
- 9.3 How two machines can be adjusted to share kVAR and kW loads is confirmed
- 9.4 Process of removing an alternator from the bus is outlined
No information
No information
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| WG467 | MARL5009A | Demonstrate basic knowledge of marine electrical systems | Unit of competency |
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| OCH09 | MARL058 | Demonstrate basic knowledge of marine electrical systems | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| AVQ1 | MAR50115 | Diploma of Maritime Operations (Engineer Watchkeeper) | Qualification |
| J718 | MAR50613 | Diploma of Maritime Operations (Marine Engineering Class 3 Near Coastal) | Qualification |