Marine engineers control the installation, operation and maintenance of machinery and equipment on ships and vessels. Marine engineers work in the engine departments of cargo ships, dredges, offshore supply and drill vessels, floating production storage and offtake facilities, oil tankers, passenger ships and tugs. They need to be familiar with various types of diesel engines, steam plant and gas turbines.

Materials engineers investigate the properties of metals, ceramics, polymers, plastics and other materials, and develop and assess their commercial and engineering applications. Materials engineers may specialise in metals, ceramics, polymers, plastics or composites.

Mechanical engineers plan, design and oversee the development, installation, operation and maintenance of machinery. They conduct research to solve practical engineering problems and improve efficiency.

Mechanical engineering associates assist mechanical engineers and engineering technologists with the design, manufacture, construction, operation and maintenance of machines, manufacturing equipment, mechanical installations and mechanical facilities. They usually have a range of duties carried out under the direction of mechanical engineers and engineering technologists.

Mechanical engineering technologists design, inspect, manage and test technologies, systems and procedures in mining, manufacturing or processing industry plants.

Mechatronic engineers design and maintain machinery with electronic and computer control systems, such as aircraft, robots, motor vehicles, cameras, power generators and mining and chemical plant machinery.

Metal surface finishers work in metal fabrication and engineering production operations. They finish metal products by cleaning, polishing, filing or bathing them in acid solutions. They also apply protective and decorative coatings.

Metallurgists research, control and develop processes that are used in extracting minerals from ore (rock) for refining metals.

Miners operate equipment to excavate, load and transport coal, ore, mineral sand and rock, either underground or in open-cut mines.

Navy technical sailors are trained for peacetime and wartime work as electronic, marine and aviation specialists and in other technical areas.

Non-destructive testing technicians examine and test the functionality and performance of an object or material in a way that will not affect its usefulness.

Petroleum engineers plan and manage the recovery of oil and gas from petroleum reservoirs. The petroleum engineering profession offers a number of specialisations, with the major areas including drilling engineering, formation evaluation, production engineering and reservoir engineering.

Polymer technicians control the operation of machinery that manufactures or finishes plastic, rubber or cablemaking products by injection moulding, blow moulding, hand fabrication, extrusion, hand lay-up, calendering and other processes.

Manufacturing production managers plan, administer and review the manufacturing activities of an organisation to optimise resource use, minimise costs and maintain quality standards.

Production or plant engineers plan, direct and coordinate manufacturing activities in industrial plants, including the design, construction, modification, performance and maintenance of equipment and machinery.